Yui Hasegawa, an unattractive high school student, has an older brother, Yu, who is both a literary and martial artist, cool, and called the most handsome guy in school.
The two are so unlike each other that it is hard to believe they are brother and sister.
There are even rumors that they don't get along, Yui, who has a "perfect brother," is troubled.

It is...

The fact that her brilliant and talented older brother is actually a severe siscon.
A hilarious home comedy about siblings who are complete opposites!

イマイチぱっとしない高校生の長谷川優衣には文武両道、クールで学校一のイケメンと呼ばれる兄・優がいる。兄妹とは思えないくらい全然似ていない2人には不仲説が流れるほどで、「完璧な兄」を持つ優衣は悩みを抱えていた。それは…才色兼備な兄が実は重度のシスコンだということ……！正反対な兄妹の爆笑ホームコメディ!?