My younger sister, Kurone, who looks like a beautiful dark-haired, dark-eyed, big-breasted schoolgirl with all the elements of a girl who is popular with the public, came to me out of the blue and asked me to stay with her because she had a fight with her father.
　I can't stop sweating inwardly at that visit.
　It's not that I have to worry about this kind of thing now, as it happens often since I started living on my own, but for once it's not good for me!

　At any rate, I'm taking a shower right now, so they won't find out right away, but Amana is there.
　For someone who doesn't know what's going on, it's nothing but a problem, like my own brother taking a little girl he doesn't know into his room and taking a shower.

　And it's not funny that the person who reported the matter is my sister!

　Anyway, there was nothing to do now but let the black sound go.
　Having decided that, I decided to try to persuade my sister to keep my twitching cheeks calm.

''Wow, I'm sorry but I can't have people over for a bit from today until Sunday...''
'What?　Big brother, you finally got a girlfriend?　It's not like you're an imaginary or anything, is it?
You're really starting to sound terrible, don't you think?

　Kuroone-sensei, who took the liberty of guessing the excuse on the spur of the moment, came with a gaze that looked at the poor thing.
　But that excuse is not something that can be satisfactory.

　How much do you mean that your sister doesn't expect you to have a girlfriend or something!

Well, that's okay, it's okay. I'll pass the time outside during the day, and you can lend me a futon for the night so I can get out of the rain and wind!
'No, that's not quite...'

　Even if Kuro-One is not there during the day, in this apartment, which has far fewer rooms, Amana-chan can easily be found.
　There's no way I'd risk that risk and let my sister stay over.

　But I was well aware that Kurone was not such an easy opponent that I could easily back down just because of that.　

''Ehhh, let me stay over~. If I'm sleeping outside, I'm sure I'll be attacked by a guy I don't know the face of, right?　Is big brother such a heartless man that he thinks it's okay for this cute little JK sister to do that to him?
I'm not thinking!　I'm sorry, but it's really not convenient!
I told you I only let you sleep at night!

　Sure, it's like a beautiful girl like Kuroone-she's asking you to sleep on a park bench or attack her, and it must be very distressing to be imitating her abandonment.
　But even if you're dealing with a younger sister like that, you can't let her know about Amana's existence.

　It's not that I don't trust her, but I'll reduce the possibility of her being reported for giving me a strange misunderstanding, if at all.
　Otherwise, Amana-chan will have to spend the day at the shelter until Amanashi comes back.
　As someone who is trusted to take care of a stranger's child, that is something that should be avoided at all costs.　

I'll give you enough money to stay at a net cafe or something!　For God's sake, I can't do it just this once!
But no!

　I was kicked out of the compromise I was trying so hard to come up with, like some cartoonist.
　d*mn it, this guy has figured out that we have something to hide!
　Then would you kindly return on your heels?

'There's definitely something about Aniki insisting that he doesn't want to stay there or something!　He doesn't care if we're watching porn or something!
'Duh!　For God's sake, I'm begging you to back off quietly!

　Even if you're in the middle of a shower, don't let a flowery high school girl proudly say porn in the presence of schoolgirls!
　Perhaps judging that persuasion is impossible from my too desperate appearance, Kuroone-she puffs up her cheeks as if she is sulking.

'Moo~, Aniki's stingy!
No need to be stingy. I'll just go to the nearest Internet cafe and make a reservation.

　At the moment when I was inwardly relieved that I was finally going to be able to convince Kuroone-sensei











'Onion!　Where's the hair dryer?
What?

　As if retribution for my attempts at hiding turned on my fangs, the bathroom door was unexpectedly opened.
　As soon as I turned around, I found Amana, wearing pastel pink pajamas with white polka dots and wiping her hair with a white towel hanging around her neck, coming out.
　Apparently, she didn't know where the hair dryer was and came out to ask me.　

　But this was the worst possible time for me to do so.

　It's even contrived from the way the room was built to begin with.
　If you go up from the front door to the end of the hallway, you'll find a washroom and a changing room, so if you leave those two doors open, you'll be able to see yourself changing in the washroom from the outside.

　And in that doorway is my sister, Black Sound.
　In other words, the situation I feared was a reality.

''Eh...?''
'Huh?　Who's that lady, huh?

　The JK from the front gate and the little girl from the back gate recognize each other with me between them.
　Kuroon is dumbfounded, rolling her eyes from astonishment, while Amana misses the pure questioning of the stranger.

　Standing between the two of them, I was dripping cold sweat from my entire body, not just my back.
　If I could, I would run away now, but in hindsight, that would have been impossible.
　Because it was faster for Black Sound to move before he could even think about whether or not to carry it out.　

''Aniki........''
Wait, wait, Kuro-One.....
... (smiles)

　I hurriedly demanded time to explain, but the black sound in contrast only gave me a smile that didn't have a smile in its eyes.



　─ ─ Holding the phone in one hand.


　
'Yeaaaaahhhh!　Get out of here, you f*cking animator!

　He hurriedly restrained his sister's outburst of trying to report his brother silently, but the black sound was donning a disappointed expression on his face.
　That reaction is not unreasonable, but please don't report him without hearing the situation.　
　Anyway, now an explanation, an explanation!

'No, black sound, there's a reason for this!
You're making excuses like that because they are dependent on you!　What were you thinking, bringing a little girl into a room with you?　I really can't believe it!
"Godd*mn, what a great déjà vu!　

　As I recall, he was like this when I first met Tenashi!
　How could you trust me as someone to entrust Amana-chan from this situation........


'Objection!　I think it's defamatory to treat him as a pedophile without hearing our defense!　So let me explain!
Dismissed, you pervert!
f*ck you!　There's no way I'm going to have that kind of arrogance!

　I snapped back at the flowing treatment of a pedophile.
　However, the black sound doesn't stop accusing me of being a pedophile at all and calls me a pervert.

　Since my life is on the line, I try desperately to avoid reporting the incident, but....

　Isn't this exciting!
"....

　Amana's angry voice silenced our argument at once.　
　It's not so much that I was told the right thing to do, but more that I was warned by Amana.
　The fact that even the first time we met, Kuroone-speaker, was silenced makes me realize how unpopular we are.

　Nevertheless, the fact that Amana-chan's existence has been exposed by her sister, Kurone, doesn't change.

　The fact that it has been exposed is one thing, but for the sake of explanation, I admit that Kuroone-san has been allowed to stay overnight.