No One Should Ever Know That I'm Seriously In Love With My Brother, Right? - Chapter 1

Translator: AJ1703

Editor: Matsu

 

 

 

►Chapter 1 (We’ve Become Lovers, So I Wouldn’t be Flattered if a Beautiful Senpai Confessed to Me, Would I?)

 

　…I can still remember it vividly.

　I was six years old back then and Chimari was four. Both of us were still in kindergarten.

　Our mother suddenly fell ill.

　Of course, our father had to run around taking care of her and other things…

　So it was just me and Chimari waiting for them to come home.

　Father left some money for us, saying, “You can buy lunch with this,” but…

　To be honest, I couldn’t even eat. I was so worried and anxious that I just shivered and didn’t even feel hungry.

　To me, while in such a state…

“Onii-chan, you have to eat!”

　Chimari said to me with a clenched fist and started to go shopping and cook a meal.

　I was honestly puzzled. Chimari had never cooked before…

　What’s more, I thought, “This is not the time for that.”

　However, you know what?

　After struggling hard, Chimari managed to finish a soggy omelet-like dish and said to me,

“Here, Onii-chan, can you eat? How are you feeling? If you’re not healthy, I’ll be sad… okay?”

　There, she smiled like she was in trouble.

　I thought to myself as a child, “Oh.”

　My sister did her best for me.

　She was two years younger than me.

　…Is she an angel? I honestly thought that she really was. I was really moved by her.

　So naturally, I ate Chimari’s omelet without a trace.

　Of course, it was her first time cooking. The taste was not as good as our mother’s omelet…

　But I was happy, seriously happy. I thought it was delicious.

“Ehehe~…”

　Because Chimari was smiling happily right next to me as I ate it.

　I realized once again that my sister is an angel.

　I think that was the reason why I fell in love with Chimari.

　But that was more than that.

　I realized it sooner or later.

　Chimari is smiling at me like an angel.

　But… I noticed that her hands were trembling a little all the time.

　Even though I was still very young, I immediately recognized it.

　It was the same as the one I had before Chimari made me an omelet…

“Fuha…?”

　When I realized that, I naturally hugged Chimari.

　I thought it was my turn now. It’s okay, after all, I’m here.

“O-Onii-chan… ueehhh, fuhaaaaa~~~!!”

　Then Chimari began to cry out loudly in my arms, as if she couldn’t take it anymore.

“Onii-chan, Onii-chan, I’m scared, I’m so scared…!!”

　I knew it… Chimari was anxious too.

　That’s why she worked so hard to make me an omelet, in a way, it was an escape from her anxiety.

　Knowing this, I had no choice but to hug Chimari tighter and tighter.

“I’m fine, thank you, I’m fine thanks to Chimari… I’m going to make Chimari fine this time. I’ll keep doing this until you feel better…”

“Kuchu…Onii-chan…Thank you…”

　Chimari rubs her tear-stained face against my chest…

　(…I have to protect her. I’ve got to protect her.)

　I thought to myself, strongly, as if to vow.

　─That’s still the case today.

　Chimari is my angel, the one I love more than anyone else…

　And she was the only girl in the world that I could truly feel that I wanted to protect.

＊　　　＊　　　＊

　The next day. The entrance to the school during lunch break.

　The school we attend, Kiyoshikan Academy, is an integration of both middle school and high school, so this is a shared area between the middle school and high school students.

　That’s why…

“Onii-chan~, sorry to keep you waiting!”

“Oh, don’t worry. I just got here myself.”

“Fufu… that sounds like a date.”

“I’m actually kind of into it.”

“…Ehehe~, I’m so excited… Thanks, Onii-chan!”

　It’s also a good spot for me, a high school student, and Chimari, a middle school student, to meet up.

“So… Do I get to eat Chima bento today?”

　I asked Chimari as if I were a close friend.

　That’s because when we parted yesterday, I had promised Chimari that we would have lunch together tomorrow.

“Yes, of course! Ehehe~, it’s been a while since we ate together!”

　Chimari held up her bag to me with a big smile on her face.

　The reason why it’s been so long is because I used to eat Chimari’s bento together with her when I was still living at home.

　Of course, on the surface, we were just “close siblings” at that time…

　Inwardly, I kept wondering if it was okay.

　I thought that Chimari was looking out for me, and that she was actually annoyed that I was giving her so much trouble.

　But that wasn’t the case, because I know now that Chimari wanted it too…

“…I’m really sorry for avoiding you for the past month.”

　I apologized again.

　Chimari shook her head so hard that the hair on both sides of her head was floating.

“No, Chima was also stagnant for a month, so it was mutual. And we can just get that time back from now on. Isn’t that right?”

“Yeah… that’s true, thanks.”

“Haha… Let’s go, Onii-chan!”

“Yeah, sure.”

　And just as we were about to walk out─

“School rules violation!! Discovered!!”

“”Wha────!?””

　Suddenly, a loud voice rang out, making us both stop in our tracks.

　What the hell!? There was a group of people wearing armbands surrounding a pair of men and women.

(The Public Morals Committee…!)

“2nd year high school students, Souta Murohata and Rika Randou, will be sent to the reflection room for violating school regulations Article 21!”

“Wha…What makes you say that, do you guys even have any proof!?”

“That’s right! We’re not─”

“There’s a lot of evidence. You see?”

　One of the members of the public morals committee threw several documents at the pair of men and women (apparently from the second year) who argued against it.

　The moment they saw it, their faces turned pale.

“D*mn it… Someone tipped them off!”

“The informant is also from a second year student, Asahi Yasukuni.”

“Hey… Souta! Didn’t you reject that girl properly!?”

“I did! There’s no way I’m dumping Rika to go out with a simple girl like her!”

“What the hell is wrong with you? It’s like you’re holding a grudge─”

“We’ve got pictures of you kissing and going to sleazy hotels. Come with us, there’s no excuse.”

“J-Just because of that…I don’t want to be sent to the reflection room…!”

“Ah wait, Souta─!”

　The guy rushed out through the encirclement of the public committee.

“If you’re sent there, you’re either getting suspended or you come back as an entirely new person! You’ve got to be kidding me, who would go to such a place─!”

　And just as they were about to run away from this place like rabbits…

“In addition to this, there is also an additional violation of Article 28 of the school’s regulations, which states that the school’s public morals committee should be dealt with in good faith.

“What the!?”

　As soon as the elegant voice echoed, the rope wrapped around the legs of the senior who was running.

　Naturally, the senior fell down with a thud and was seized by the public morals committee members who were chasing after him.

“I’m sorry. Thank you for your help, Chairman of the Public Morals Committee.”

“Don’t mind it, as long as you take them into custody.”

　The small girl who responded in a relaxed, old-fashioned tone of voice was a celebrity known to all students at the school.

　The head of the public morals committee, Yukariko Kanomiya.

　She’s a beautiful little girl, as small as a child, but because of her cold three-eyed gaze, her ever-present pout, and the sharp atmosphere she exudes, she is known as the “Permafrost Head of the Public Morals Committee.”

“Nooooooooooo~ Someone save meeeeee~!”

　In the end, led by her, the public morals committee took away the two violators of school regulations.

　The students who saw them off began to talk to each other in hushed tones.

“Really, if it weren’t for Article 21, this would’ve been a great school…”

“In any case, it’s the one who violates the regulations that’s at fault… They entered our school with their own consent.”

“It can’t be helped… The rest of the world is so lax, it would be nice if there was at least one place that was strict.”

“In the first place, we are a preparatory school… I can understand why we have Article 21…”

　In the midst of this, Chimari and I looked at each other.

“Chi-Chimari had never seen an Article 21 offender being taken away by the public morals committee before…”

“I haven’t seen it in about six months… It’s a scary sight no matter how many times I see it…”

“W-What’s going to happen to the people who were taken away?”

“I’ve been told that if you break up with your partner and write a note saying you’ll never engage in illicit sexual relations ever again, you can come back for educational guidance…”

“What kind of guidance do they give you?”

“I don’t know. All I just heard is that all the people who came back became serious and earnest like a different person.”

“Okay, so if I refuse the guidance, what might happen…?”

“Suspension at best, voluntary expulsion at worst.”

“T-To that extent…!?”

 

　Article 21 of the school regulations of our Kiyoshikan Academy.

　It’s a bit of an anachronism. And it’s really unreasonable nowadays.

　But that’s why this school is so popular among the parents…

　It’s something we’re obligated to strictly observe.

　That’s right. “Students of this school are strictly forbidden to engage in impure sexual activities”─

 

(We really shouldn’t get exposed to them, Onii-chan.)

　With a pale face, Chimari confided in me.

(Once again, we’re not just having an impure relationship, you know.)

　It’s not just impure sexual intercourse that’s not good, but if you add “with your siblings” to that, you could be expelled from school immediately, not to mention sent to the reflection room.

　If that happens, of course, the parents will automatically find out.

　To be honest, I can’t even imagine what would happen if our parents found out…

　But I can say for sure that my parents are sensible people.

　If this happens, there is a high possibility that we will be separated from each other for the sake of our appearances to the world…

　If we’re not careful, we may not be allowed to see each other for the rest of our lives… Chimari, when she grows up, may be forced to marry another man…

(Ahhhhhh, it’s not even funny as a jokeeeeeeeee!)

　I couldn’t help but scream in my mind.

(I know! We won’t! We’re going to make it through this without getting caught─!!)

　As I clenched my fist with renewed determination, Chimari gave me a little ear-to-ear talk that made me feel a little taller.

(So now… Onii-chan, what are we going to do today? …Should we call it off for today?)

(There’s nothing to be done about it! I’m going to eat my Chima bento with Chimari today! Chimari made it for me, after all! And it’s been a month! There’s no way I’ll make do without that!)

(Onii-chan─!)

 

　A few minutes later. We were sitting side by side on a bench in a grove of trees right in the middle of the high school building and the club building, where we had been eating lunch together for some time.

“Yeah… it looks like it’s going to be okay here.”

　Trees blocked most of the line of sight from the high school building, and the second-floor corridor to the clubhouse, the only place with an open view, was almost empty at this time of night.

　We searched and found this place at Chimari’s request for a quiet place, but now that I think about it, she might have been looking for a place where we could enjoy being alone together without any worries.

　In fact, there’s probably no other bench in the world that’s so perfect for us and so little known by the students. We’ve never run into anyone else here before.

　And that means that Chimari has been thinking of me ever since then.

　No, it must have been a long time ago. She’s been with me since we were kids…

“I-I also wonder if Onii-chan would be okay if a member of the school morals committee saw us eating lunch together.”

　And then Chimari asks me, her face still tense from earlier.

　When I see her face, I feel like I want to protect her…! I couldn’t help but be filled with that feeling.

　I smiled and responded in a dependable manner.

“To tell you the truth, I’m not too worried about it. After all, we’re actually siblings, and we’ve been eating lunch together for a while now. So I think it’ll be fine if we say, ‘Is it weird that we eat together as siblings?'”

“Ah… yeah, that’s right.”

“In addition, I think that the general idea that siblings can’t be together is a good thing for us. Even if we do something a little risqué, if we say, ‘Because we are from the close sibling group,’ then people will say, ‘Well, you two are too close, but if you’re that kind of sibling group, then I guess it’s expected…'”

　Well, I’m sure we’ll be called siscon and brocon, but on the other hand, if we can get away with that level, it’s somewhat good for us.

“Then can we also do the ‘ahn~’ thing?”

“Don’t worry, if the public morals committee finds out, I’ll be able to talk them back.”

“Whoah… Onii-chan is so reliable… and cool… I love you…”

“Ahaha, thanks a lot. So let’s have that long awaited Chima bento.”

“Yeah…! There, and there, here you go!”

　Chimari unwrapped the package on her lap and unfolded the two-layered box.

“Oh… you’re really into it, for today’s Chima bento.”

“It’s been a long time since we’ve had lunch together, and this is our first ‘lovers’ lunch.”

“Yeah… thanks, I’m glad. This looks delicious… It’s full of my favorite foods.”

　The first layer has onigiri (rice balls) and pickles in it, the second layer is filled with fried chicken, scotch eggs, simmered vegetables and Chinese kikurage salad.

“You woke up early this morning to make this for me, didn’t you? Thank you so much… I love you, Chimari.”

“Ah, yeah…♪ Ehehehe~….”

　When I gently stroked her cheeks, Chimari rubbed her adorable puffy softness against my hand as if she was happy. It’s cute and adorable.

“Well then…. you should have a bite on it already! It’s okay now, right!?”

“By all means!”

“Yeah! Then I’ll start with the fried chicken… Here, aaahn~♪”

“Aaahn~… mhmm! Nom nom…”

“H-How is it? Is it delicious? Onii-chan, is it tasty?”

　I gulped and turned my face away.

“Ehhhhh!? Was it not good!?”

“No… it was delicious and I was so happy that I nearly fainted.”

“Mou~, Onii-chan! Don’t scare me like that!”

“Ahahahaha!”

“Fufu~… Mou~, I’m not giving you any onigiri if you’re like that.”

“That’s a problem! I can’t miss out on the onigiri that Chimari made for me!”

“Then…here, aaahn~♪”

“Aaahn~! Nom, nom… Yeah, it tastes like Chimari…” [TLN: What?]

“Oh, that’s it?”

“I’m thinking this is it. My tongue has been trained to taste Chimari.” [TLN: WHAT!?]

“Trained, you say? Onii-chan, that’s a bit naughty.”

“There’s no other way to say it. Besides… you don’t mind that kind of expression anymore, do you?”

“N-No. Rather, I was excited and happy because it’s a line that an ‘Onii-chan Boyfriend’ would say.”

“Yeah, that’s what I mean. Because I’m Chimari’s brother and boyfriend.”

“Ehe~…Ehehe~, I’m happy, I’m so happy. Chima is Onii-chan’s sister and girlfriend~…♪”

　Chimari smiles and squeezes her twin-tails with both hands.

　It’s a habit that she’s had since she was a little girl, when she was so happy.

　That’s why I was also happy and broke into a smile on my face as well.

“…..Hmm?”

　That’s when I suddenly noticed it.

　A window on the second floor corridor leading from the high school building to the club building.

　There’s a female student looking at us from there…

　I knew that this place would not be completely deserted.

　(Or rather, isn’t that Juujigahara-senpai from the 2nd year?)

　Even from a distance, you can tell that she has gorgeous, cool good looks. And for a woman, she stands tall.

　She’s the senior who’s famous for being the most beautiful girl in the school, Kii Juujigahara.

(It is said that she is a “Takamine no Hana” who doesn’t show interest in others… So why is she looking here…?) [TLN: Takamine no Hana = Unreachable Flower]

　But as I thought about that.

(Eh!?)

　Suddenly, she took out her phone, pointed it at me, and stopped for a moment.

　No way, did she… take a picture of us?

(No, I don’t know if that’s really the case.. but if it is, then seriously, why would she do that…?)

　Because of this, I was a little panicked inside.

“Mouu~, Onii-chaaaan. Don’t gaze at the beautiful woman, look at Chima!”

“Ah, wait!”

　Mugyuu! She pressed her body more and more against mine with the force of a bump.

“N-No, not now─”

“We’ll be fine even if someone sees us, right? Onii-chan will protect us, right? That’s why Chima is pampered with peace of mind.”

“…………”

　The words and the cute smile make me feel the trust from the bottom of her heart.

　If that’s the case, then I have to take my stand as the older brother-boyfriend!

　Well then, what are you going to do now, Juujigahara-senpai!? What on earth do you need from us─

“Eh… Ah, what?”

　Before I knew it, the figure in the corridor had disappeared.

“Onii-chan?”

“Ah, no… it’s nothing to worry about, Chimari.”

　I made an effort to reply in a gentle, caressing voice.

　Even if Juujigahara-senpai had taken a picture of us and reported it to the public morals committee…

“As I said before, if anything happens, I will take care of it. So, Chimari, don’t be shy, just go ahead and tell me what you’ve been holding back.”

“O……Onii-chan……!”

　Jiwaa~, Chimari’s cute eyes moisten. Her small body shrinks tightly.

“Ah mouuuuuuuuuuu~, Onii-chan I love you so much! Here, have some more!”

　She was so excited that she started offering me side dishes one after another.

“Hahaha, I can’t eat that many at once.”

　As I laughed and took a bite, I thought about it again in a corner of my mind.

　Yes, as long as we don’t cross the line where we can’t get away with it, we can definitely pass as ‘close siblings.’

　And I also have a sense of guilt that I have made Chimari feel lonely for the past month…

　So now I want to let go of everything I’ve been holding back with all my might.

　And even if someone does find out about it… I’ll make sure we get away with it using some crappy logic!

　This is my duty as an older brother and boyfriend to the world’s cutest Chimari─

 

　So I spent the whole lunch break with Chimari and we had a lovey-dovey lunch and parted ways.

“I’m going to Onii-chan’s place again tonight! You’ve been eating out or eating lunch at convenience stores all the time, haven’t you? That’s no good. You have to eat Chima’s meals!”

　We made a promise, and I was feeling more and more excited.

　I’ve been thinking about the possibility that I might have to be questioned by the public morals committee, but there was no such development…

　So, I spent the afternoon class looking forward to it… and finally, during after school.

　All right! I stood up, but then I heard a voice from the side.

“Oi, Chiharu, can I go to your place again today?”

“Ah, me too, me too!”

　It was a group of friends from my class who were getting ready to go home.

　I hesitated for a moment, but─

“O-Ohh…”

　And in the end, I had no choice but to say so.

　This is because the room I’m living in has turned into a so-called “hangout” over the past month.

　Regardless of the reason for this, if I were to say, “I can’t do it today,” when I had always been ready to accept anything, I was sure to be questioned as to why.

　Besides, not only today, but in the future, Chimari may come to make dinner for us…

　In fact, it would be better to introduce her to my friends who come to visit me as soon as possible, and let them think of us as a normal sibling.

　That’s why─

“The only thing is, my little sister is coming over today, but I hope you don’t mind.”

“A little sister? You have a little sister?”

　The first friend who approached me with a surprising and slightly uncomfortable reaction was Muneshige Hakamada, who’s one of the regulars at our hangout.

　This guy is a transfer student only from high school and has only known me for practically a month, so he doesn’t know that I’m close to my sister.

“Yeah, she’s supposed to come make dinner for us today.”

　So, I added in a tone of voice as if it was obvious.

　Then Muneshige shook his head, wagging the tail of his long hair, which was partially tied behind his back.

“Huh…!? I can’t believe it, so there’s such siblings in this world huh…”

　The way he said it was as if he couldn’t understand it.

　…To that extent? I thought to myself.

“Well… anyway, that’s why I’m going home after shopping with my sister today. Muneshige and the others are going directly to my house, right? If that’s the case, here’s the key.”

“Oh, thank you.”

　I didn’t want him to spend too much time asking about it, so I gave him the key to my house instead.

　It’s a common occurrence, and we have no objections to it either. This is a loose relationship, or rather a relationship of mutual trust.

 

　After leaving Muneshige and the others, I left the classroom and hurried to the school gate.

　At the gate, I changed my shoes and walked to the front of the school building.

“Ah… Onii-chan!”

　…It was as if only the area where Chimari was standing was shining brightly.

　We’ve met many times in the past, even in the afternoon─ but this is the first time we’ve met to go home together.

　That’s why I’m irresistibly nervous. On the surface, we’re still the same close siblings, but we’re not just that anymore. In fact, we’re lovers─

“Sorry, did I keep you waiting?”

“Fufu, Chima just arrived too.”

　It was a reversal of their lunchtime exchange. That’s why I laughed so hard.

　…This is exactly what I like about Chimari.

　She’s always cheerful, energetic, cute, and smart, so being with her makes me very happy and fun.

“Hahaha… Yeah, that’s just perfect.”

　Well then, let’s go now─ but just as I was about to say that.

“You guys have a minute?”

　We were stopped from the side.

　When I looked back, I saw a student wearing… the public morals committee armband.

(!!─)

　I knew this might happen at some point, but really now, during this time!?

　I knew it might come eventually, but at this point!

“W-What is it?”

　I tried my best to hide my inner nervousness and responded calmly.

　Incidentally, Chimari quickly hid behind my back. And then she squeezed my clothes.

　─The feeling of needing to protect her seems to be endlessly welling up from that touch!

“I’d like to confirm the record. You’re not engaging in impure sexual intercourse, are you?”

“Ah… isn’t that a given? We’re siblings after all!”

　I said proudly.

　Of course, I was nervous inside, but,

“You can find out more about this by checking our school records. I’m Chiharu Yuma, first year high school class 3, and Chimari Yuma, second year middle school class 1… Well, we’re certainly very close siblings for our age, so I’m sorry if we gave you the wrong impression.”

“Fumu… I was able to verify.”

　The public morals committee member must have checked the school register with the tablet in their hands. They nodded their heads and looked at us.

“Then I’m sorry for doubting you.”

“We don’t mind it.”

　Yeah, it looks like we’re going to be okay─

“But even though you two are siblings, I would like you to refrain from socializing in a way that could have a negative impact on those around you. It’s not a violation of Article 21, but if it’s too much, we may have to crack down on it.”

“!!…I-I see, okay…”

　So they’ll keep an eye on us from now on…!

　I was inwardly gnashing my teeth.

“Can’t siblings just get along!?”

　Chimari peeked over my back and shouted.

“I think it’s much worse for them to fight all the time. And I don’t think there’s anything in the school rules that says a sister can’t love her Onii-chan!!”

“T-That’s true… yes…”

　In response to Chimari’s frank statement, the public morals committee member was at a loss for an answer.

“A-Anyway, be careful in the future!”

　In the end, the public morals committee member left with these words of abandonment.

　The remaining two of us looked at each other.

“Ehehehe~… I told them so…!”

　Chimari was laughing awkwardly and shaking her hands as she gripped my clothes, as if she was getting nervous now.

　─But she still said that to me. What a lovely and cheerful little sister I have…!

“…Oh. That was very dependable of you.”

“It’s because Onii-chan was the first to say it outright. That’s why Chima had to work hard too.”

“I see… Well then, it was worth the effort for me.”

“Ehehe~… Yeah, Onii-chan was also reliable… and cool…”

　I touched Chimari’s cheek, she rubbed her cheek against my hand, and we left school shoulder to shoulder.

　I was a little worried about the eyes around us… but it’s okay, after all siscons and brocons do this! In fact, we regained our composure and walked proudly. [EDN: No, they don’t.]

 

　On our way home from school, we stopped by the supermarket to shop for dinner.

“So, Onii-chan, what do you want to eat today?”

“Let’s see… we had a sumptuous lunch, so I think I’d like something light for dinner.

“Awawa, Onii-chan, you’re being too direct. But Chima gets the point, I can understand you perfectly!”

“Oh, as expected of Chimari.”

“I’ve been Onii-chan’s sister for 14 years. So grilled fish, grated daikon, dried daikon… and oh, shiitake mushrooms are a must for Onii-chan, right?”

“You certainly know your stuff.”

“It’s Chima after all! Ehehe~” 

　We put the ingredients in the basket, feeling like a close sibling but also slightly like a newlywed couple.

　Incidentally, Chimari was holding my arm the whole time.

　She’s slender but soft, and the feeling of her body, which is just beginning to become a woman, is soaking in my skin…

　It was also irresistibly endearing and kept me on the edge of my seat.

　It was such a great shopping experience that it might have made me feel like we’re a newlywed couple.

 

　When we left the supermarket, we walked home, shoulder to shoulder.

“Have you told Mom you’ll come by my place?”

“Of course! Mom was impressed with my patience for a month.”

“So she knew that Chimari wanted to come over and take care of me… As expected of Mom.”

“She didn’t see that Chima was in love with Onii-chan, though♪.”

“…Well, it’s a good thing we’re close siblings.”

“Chima has always just been in love with Onii-chan, though.”

“…The same can be said for me. That’s why it was so painful.”

“Chima doesn’t mind anymore… After all, I’m so happy!”

　Chimari hugged my arm more and more, and pressed her body against mine.

　Ah, I’m so happy… I wish this happiness could last forever…

　─Maybe it’s a very thorny road, but…

 

“That’s her!?”

　That was the first thing that came out of his mouth when I entered the house.

　Of course, it was from Muneshige, whom I had entrusted the key to and had gone home to hang out.

“W-Why are you shouting like that!?”

“Because you wouldn’t normally come in here arm-in-arm with your sister! Moreover, she’s carrying a shopping bag! It’s obviously the move of a girlfriend who has come to cook for her boyfriend who lives alone!” [EDN: HELL YE MAH MAN]

　All the others were whispering to each other, except for Muneshige, who was trying to make a point.

“Whoa, whoa, whoa, whoa! Yuma’s sister is so cute, isn’t she!?”

“Oh no, I’m getting a little bit excited!”

“I want a sister as cute as her!!”

　…Or rather, they were getting worked up.

　Well, this is also the result of Chimari’s cuteness… No surprise there.

　I was a little bit happy about it.

“Onii-chan, are these your friends?”

　Chimari was in no hurry. She looked up at me and asked.

“Ah, yeah… I forgot to explain this to Chimari, but this place has turned into a ‘hangout’ in the past month.”

　The first floor is a parking lot and warehouse, and the second floor, which is here, is just the office of my dad’s business, Yuma Construction Company, during the day…

　However, when my father and his employees returned home after work, this 20-tatami mat sized room, complete with a desk, sofa, and a big TV, was transformed into a room that I occupied and slept in.

　A large room, out of sight of my parents─

　Obviously, all my friends would come to visit.

　Almost every day since I moved into this room, someone has been here after school like this.

　…I was so happy that I forgot to tell Chimari about it.

“I see. Onii-chan must be very popular!”

“If anything, I think the place is more popular than me…”

“Anyway, in that case… Welcome everyone! My name is Chimari, Onii-chan’s little sister! I’m sorry to bother you all today, but I hope you guys don’t mind!”

“”…Ah, yes…!””

　Muneshige and the others seemed to be a little surprised by Chimari’s greeting, which was bright and cheerful with no hint of guilt.

　And everyone gets more and more enthusiastic. “Yuma’s sister is not only cute, she’s a good girl!” Somewhere along those lines.

(Fuu~……Chimari is a good person even though she looks like this. There’s no room for error…)

　As an older brother, I was inwardly proud of her.

　And then.

“Oh? Chi-chan, long time no see~!”

“Ah, Miyu-chan!”

　Chimari jumped up and laughed when she was approached by a red-haired girl sitting on a sofa in the back of the room.

“Oh, you’re here again today, Miyuka?”

“Yeah, sorry to bother ya~.”

　This girl─ Miyuka Tsui, is a childhood friend of us siblings, who responds with a book open on her lap.

　As you can see from her calm atmosphere and slightly thick figure, she is a kind-hearted person…

“Haha, I knew you were reading a book, Miyu-chan.”

“Yeah… I can’t read at home.”

　She’s also a voracious reader.

“Haha, Miyu-chan has a very prosperous set menu restaurant, right? If you were at home, they’d be like, ‘Help us too, Miyu-chan!'”

“That’s right~. That’s why I’m taking refuge here… I’m always sorry for Chi-kun.”

“Don’t worry about it. You’re always welcome here.”

　So, along with Muneshige, she was one of the first regulars to come to my house…

　In a way, this was probably a good thing. Chimari felt a little better knowing that there were girls there instead of just guys.

“So, Chi-chan, did you come to make Chi-kun’s dinner today?”

“Yes! Because Onii-chan said that ever since he started living alone, he’s always eaten out or packed lunches from convenience stores.”

“Awawa… of course Chi-chan would be worried. Or rather, I’m surprised you didn’t come for a month.”

“Well, you know about that, right? I’ve been keeping an eye on things anyway.”

　Muneshige and the others had a look of “I see” on their faces as they listened to their exchange.

“The fact that Tsui said it like that, it means that they have always been like this… The Yuma siblings are amazing. You’d think they’d be in a relationship at first glance.”

“I-It’s not like that. Chimari is a strong person, but she still acts spoiled when it comes to me. She’s not ready yet.”

“Onii-chan, that’s not something you want to say to someone who’s about to cook you dinner.”

“D*mn it… you got me on that one…!”

“I’m being shoved up your butt!”

　Everyone laughed out loud at Muneshige’s tsukkomi.

　But then he said…

“Umu, but you know what? I’m the kind of person who never misses a hunch.”

“About what?”

　I tilted my head at Muneshige, who suddenly crossed his arms and began to ponder.

“No, I have a hunch that you two are dating.”

“!!─”

　Y-You’re really sharp, Muneshige! Are you so experienced that you have developed an eye for such things?

　Well, it’s true that he’s a handsome guy, and he went to a different school in middle school, so it’s not surprising that he has a lot of experience with relationships…

　Not that it matters now!

“If you ask me, the atmosphere might be too much for siblings…”

“In other words, she’s not my sister, she’s my girlfriend…?”

“If that’s the case, I hope so, Yuma! Chimari-chan is really cute after all!”

　And then the others started whispering about it!　I’m glad that Chimari is getting praise, but─

“Oh, so you guys thought we looked like we got along so well that you’d think that!?”

　At any rate, I desperately tried to divert the conversation.

“I’m honored that you would say that! After all─”

“No, because as I said before. No matter how close they are, siblings don’t usually go shopping arm in arm at this age.”

　Muneshige pointed out calmly as usual.

“T-That’s not true though!? It’s normal in our house, right!? Chimari!?”

“Y-Yeah! You see, Onii-chan’s so tall that it’s easy for me to walk when I can hold him in my arms and I’m happy─”

　Chimari also held my hands and did her best to support me.

　However,

“In other words, you love Yuma, don’t you, little sister?”

“Y-Yes! I love him!?”

　Wait, Chimari! I think you’re overreacting! But I’m still happy to hear that!

“But then, Yuma also…”

“Ah, yeah! I’m not sure what’s wrong with loving my little sister!”

　Oh no… I’ve done it now! I was too hasty for my own good!

　But there’s no way I’m going to say, “No, I don’t…” here! Chimari is telling me that she loves me!

“””Yuma is awesome! But it’s no wonder! It’s not unreasonable since she’s such a cute little sister!”””

　Everyone agreed with me. Thank you very much!

“…You guys are a siscon and a brocon sibling.”

　Muneshige gave me a hard time about it, though.

“…Don’t tell me you guys are going to cross that line!?”

“N-No, we won’t! Well─”

“Well?”

“No… it’s nothing…”

　That was close… I almost said, “Not yet.”…

　No, but if we continue to go out like this, there will be a time…. when that happens…

(Erotic things with Chimari… no, no, kissing goes first before that… Uwooooooooooh~ is this fine, is this possible… it’s possible, I think… after all, we’re not a normal brother and sister pair…) [EDN: We need to talk AJ.]

“…………Yuma.”

“!? What do you want!?”

　I felt as if he could see through what I was thinking, and my tone became stronger.

“Yep, I can’t believe it. You and your sister are so close.”

　He said with a sigh.

　W-We’ll be just fine, right? They didn’t really see through me, did they…?

 

　I was a bit worried, but everyone left without making any further comments about our relationship.

　So, with a sense of relief, I asked Chimari to make dinner for me…

“Hey, Onii-chan.”

　The two of us were eating it together.

“Does Mune-kun have a sister by any chance?”

　While moving her chopsticks, Chimari asked me with a slight tilt of her head.

　By the way, Mune-kun is Muneshige. After that, he told Chimari that it was okay to call him by his first name, so she started to call him that.

“Muneshige’s sister? No, I haven’t heard anything about that, but… why again?”

“Ah, yeah, you know what? Mune-kun said that he couldn’t believe that Chima and you were so close, right?”

“Ah, yes… he did say that.”

　That made me feel uneasy again.

　Chimari, however, did exactly the opposite of what I was thinking.

“I felt like that was just a comparison with his own situation.”

“Because Muneshige doesn’t get along with her sister? I don’t know, he never talked about it before…”

“Onii-chan, have you ever been to Mune-kun’s house?”

“No, I haven’t. He’s always at my house.”

“Hmm~…”

　Chimari took a bite of her rice.

“I had a feeling he was jealous of us.”

　She said that as if she was talking to herself.

　It was, after all, the exact opposite of my impression.

 

　Anyway, that’s how I was able to get Chimari to meet everyone without any trouble─

　I was relieved to know that I could continue to do this without being found out (although there was a good chance that Muneshige would say something).

　─But let’s not forget.

　The road we’re going down is definitely a thorny one with difficulties waiting for us.

　I mustn’t forget that…

　(If things are going so well, I don’t think there’s anything to worry about… I guess…)

 

　So the next day’s class.

　*Crack-Snap♪

『Onii-chan, let’s take a picture together sometime! Chima wants to use it as a lock screen!』

『Oh, that sounds good. Let’s get matching ones.』

『Yeah! I’ll see you at lunchtime!』 [TLN: This was in a message form.]

(…Hmm~, I can see Chimari’s happy smile just from this exchange… Is Chimari a genius at being cute…?)

　During the break, I was secretly smiling and exchanging messages with Chimari, until…

　There was a sudden buzz in the classroom.

　What is it? I looked up and saw that everyone was looking towards the doorway of the classroom.

　So I turned my gaze to it as well─ and found that there was a completely different atmosphere surrounding it.

　A female student. From the color of her uniform and tie, she was in her second year of high school.

　Her face was already incredibly beautiful. I would classify her as a cool beauty. She has long, gorgeous, wavy hair. She is tall and slender, but she has a figure that even her own sex would envy.

　In a word, she is like “Takamine no Hana”, a person who lives in a different world…

(Juujigahara-senpai…!!!?)

　Since that celebrity was looking around the first-year classroom, I could understand why everyone in the class would be excited, but─

　Buwa~, I broke out in a cold sweat at once.

(I don’t think Juujigahara-senpai came to visit me about yesterday’s incident…)

　So yesterday, nothing happened (except for a slight caution from the public morals committee)…

　That’s why the fact that now a person who never comes to our classrooms has arrived has made me nervous.

　Maybe I’m thinking too much. Maybe I’m just being too self-conscious.

　But when I thought about the reason why she was coming to visit me, I wondered if there was any other reason…

　As I was thinking about it, my eyes met with Juujigahara-senpai.

　Then, she walked right up to me.

　I could tell just by the way she walked that she was different from the people around her.

　She looked like a model, and you could not resist looking at her…

　Such a person came in front of me.

“You’re Yuma-kun, right?”

“Y-Yes…”

　She knows my name. Which means she took the trouble to look me up.

　From this point, I already knew… it was about that matter…

“I’m Kii Juujigahara, a 2nd-year high school student.”

“…I know.”

“I see. Well then, let’s get right to it─”

　Juujigahara-senpai, true to her reputation as a cool beauty, kept her expression completely unchanged.

“Let’s go to that place from yesterday.”

“!!────”

　That sentence made me even more nervous and made me break out in a cold sweat.

 

　With my heart racing, I followed senpai’s graceful steps.

　What the hell is going on? What is she going to say to me?

　I can’t read her at all, so I can’t nail her down beforehand.

　So we ended up arriving at the place… without even having a conversation.

　This is where me and Chimari had lunch together yesterday.

　…The place where this person was pointing her phone at me from the second floor corridor.

“W-What the hell do you want?”

　I finally managed to find my voice. I think my eyebrows were probably too close together.

　After all, if we’re going through the trouble of coming here, it’s going to be difficult to find out whether or not we’re in violation of Article 21.

　If that’s the case, I have to say something back as best I can. I must protect Chimari, and most importantly, my relationship with Chimari at all costs─

　And just as I was making up my mind inwardly.

“Here.”

　Senpai took out her phone and showed me the display.

　The picture on the screen was not very clear because it was zoomed in with the phone camera, but as I had suspected yesterday, it was of the two of us clinging together with all our might.

“W-What’s this all about?”

　I had no choice but to respond.

(Are you trying to scare me…?)

　That’s what I was thinking.

　But then, senpai said,

“The picture of you siblings. It was too far away to take a good shot.”

　H-Huh?

　Her expression seems to have softened a little…?

“But it’s a nice scene, though.”

“…E-Ermm?”

“I was worried because I hadn’t seen you two for a while. I thought you guys might have had a fight or something.”

“Y-You’re worried…?”

“Yeah. But you guys made up, didn’t you?”

“Made up…?”

“Yeah. Yesterday, you two had lunch together for the first time in a long time. And you guys even seem to be getting along better than before.”

“………………”

　What the? What was that?

　Just what on earth does this girl want to say? What is she trying to say? What is she implying?

　At any rate… it seems like… she’s not trying to condemn my relationship with Chimari…?

“I…” [TLN: She used “atashi” here, basically watashi except more elegantly, just wanted to let you guys know.]

“W-What!?”

　*Fu~asa, senpai brushed off her long, beautiful, wavy hair.

　And then─ she looked at me.

　She smiled and chuckled.

(…………Eh?)

　While I was puzzled, senpai had a further attack on me.

　When I thought that her seductive lips opened…

　She said this.

 

“I like you. So will you go out with me?”

 

“………………………………………What now?”

　I didn’t know what it meant at first.

　It was too unexpected.

　But as time went by, my mind slowly caught up…

“Ehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh~!!!?”

　I couldn’t help but scream─

“Ehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh~!!!?”

　On the street in the early evening.

　Chimari, who was on her way to the supermarket and heard the story, shouted the same way as me.

　I thought to myself, “I can feel the blood connection here…” but wait, hold up, now is not the time for that.

“No, I was wondering if I should tell Chimari, but I thought it would be dishonest to keep it a secret.”

“W-Why didn’t you tell me during lunch break?”

“Well, you see… I hadn’t really processed it in my mind.”

“I guess that’s understandable… The most beautiful girl in school, who you’ve never talked to before, suddenly confesses her love to you… Why? You’ll definitely be surprised…”

　I’m very grateful that she understands me. In fact, my head was full of question marks for a while after that…

“So I spent my lunch time on Chimari without thinking about it. I’m very sorry about that.”

“Y-Yeah, that’s fine after all… I’m basically just happy to be with Onii-chan…”

　Kuh…! What a cute thing to say… If we weren’t on the street, I would’ve hugged her.

“But that’s a different matter! Onii-chan!”

“Ah, yeah?”

“…You properly turned her down, right!? You said no, right!?”

　Ah… that’s right, that’s what Chimari is most concerned about.

　Apparently, my head isn’t spinning properly yet. Well, that’s how shocking the confession was…

“Well… you see, I had no idea what was going on.”

　Then I changed my expression and turned directly to Chimari.

“…But I still managed to refuse. ‘I’m sorry, I can’t’, something like that.” [EDN: I’m done.]

“Ah… thank goodness.”

　Chimari breathed an obvious sigh of relief.

　I was a little surprised by that, so I decided to add something else.

“It’s obvious I’d say that, right? After all, I have the best girlfriend in the world, Chimari.”

“Wah…!? O-Onii-chan…!!!?”

　Chimari staggered, this time holding her swollen breasts.

　I was so happy to see that her heart had been pierced, and I decided to give her another shot.

“I’m sure that no matter what happens, I’ll always love Chimari… Don’t worry, I won’t fall in love with her even if she’s the most beautiful girl in school.”

　I put on my best face and said in a lower, more stern voice than usual.

“!!!? ~~~~!!!!!!”

　Chimari grabbed the twine and shivered, shrinking her body a little…

“Onii-chaaaan!!!”

　*Gaba~!

　She jumped as if she had been hit by a bullet.

　─But she’s not the only one.

“I love you!… *Chun~!!!” [TLN: Chu is like an sfx for kiss]

“!?!?!?!?!?!?!?!?!?”

　It was a little light.

　However, it’s true that Chimari’s lovely, pretty lips were pressed against mine…

　It’s a sweet softness that made my head feel hot in that instant.

　─I was kissed. [EDN: aight then.]

　It took me a few moments of shock to realize that.

“Ehehe~…I’ve done it now!”

“…Hey! Wait, we’re in the streets!”

“Don’t worry, there’s no one around. Even if there was someone around, I’d have no choice but to kiss you after you said something so heartwarming.”

　Chimari looked incredibly happy as she pressed her entire body against mine.

“It’s our first kiss, right!? Between Onii-chan and Chima… a kiss between two lovers…”

　She whispered seductively and rubbed her cheek against mine.

　It’s like she’s just chewing on joy.

(SHE’S TOO CUTE…!)

　The majority of my brain screamed with delight. That’s how cute it was.

　But at the same time─ The remaining few percent of my brain was also thinking.

(Once Chimari is turned on, there’s no stopping her…)

　This is because of the intensity of her feelings for me, and also because she is still very young.

(So, I, as the older brother boyfriend, should watch out for her. I have to be the one to remind her the TPO of flirting…) [TLN: Time, Place, Occasion]

　Fortunately, it seems that no one saw us for now, but that doesn’t mean we’ll be safe again in the future.

(Yeah… repeating it again… this’ll be my duty…)

　…Such thoughts went through my mind.

“Nggh~, Onii-chaan~… wuv you…! I wuv you so much…! Churi-churi~♪”

　My little sister, also my girlfriend, is really cute─!!!!!!

　My thoughts were gradually occupied with that

　…I didn’t know that the thorny road we were heading towards was about to begin in a major way.

 

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Translator’s Afterword: First of all, sorry if this took awhile to be finished. I was busy with irl stuff and cabal had an ongoing event that dad forced me to do which is quite annoying. The event ends around the 13th and I’ll probably be able to focus even more on translating.

In response to Matsu’s Afterword, yeah idk what I’m doing either kekw.

Editor’s Afterword: what the hell did I just read.