Imouto wa Siscon Ani ga Mendokusai

Yui Hasegawa is a high school student who considers her older brother, Yu, to be perfect. Yu is known for his talent in both literature and martial arts and is regarded as the most attractive student at school. Despite their close relationship, their appearances and personalities are vastly different, leading some to believe they do not get along. However, Yui is unaware that her seemingly ideal brother has an intense affection for her as a sister. The story explores the comedic dynamics between the siblings as they navigate their contrasting lives at home.