Imouto wa Siscon Ani ga Mendokusai

Yui Hasegawa is an unremarkable and plain-looking high school student who happens to share a household with someone entirely different. Her older brother, Yu, is widely celebrated as the most handsome boy in their school. Beyond his striking appearance, he excels as both a gifted writer and a skilled martial artist, projecting an effortlessly cool image that earns him constant admiration from everyone around them. The two siblings are so drastically different in personality and appearance that many of their classmates find it difficult to believe they are even related. In fact, rumors have begun circulating throughout the school suggesting that the pair do not get along at all. However, the reality behind closed doors is far more complicated than any schoolyard gossip implies. Yui finds herself deeply troubled by a secret she cannot share with anyone: her brilliant, universally adored older brother is actually a severe sister complex fanatic. Behind his flawless public persona lies an overwhelming and exhausting obsession with his younger sibling that makes daily life incredibly difficult for her. This hilarious domestic comedy follows the chaotic everyday lives of two complete opposites forced to navigate the challenges of being brother and sister when one of them simply cannot keep his affectionate tendencies under control.