I've read too many mangas that are similar to this. They all follow the same plot and sometimes it just gets to such a point that the manga itself becomes too predictable. But for some reason even though I've read 20+ romcoms that are exactly this, I still can't get enough of it. "MC wants to...
SHE looks too much like a boy, look i'd choose tomboys over normal girls any day but she legitimately looks like a man. At this point i cannot take this as normal romance this looks like BL in disguise.
Now obviously thats not his ACTUAL brother thats his homie which makes this completely justified as to be honest, who haven't had sex with their homies in a group sleepover amirite everybody or amirite everybody