I’ll pretend it’s one of those things where they refer to each other as cousins but aren’t actually because it was a decent read. I read this at 3A.M so I vaguely remember the plot. MC has a twin sister (she’s older) and she’s great at everything. MC on the other hand is shy and not well versed. He always thought their childhood friend was always attracted to his sister but SPOILER he isn’t. The ML only became closer to the sister because he noticed MC only payed attention to him when he talked to the sister. Alsoooo the sister is dating her teacher… which is questionable but go off ig??
Kawaii Kara Kimi Ga Warui