Ema, the cool, perfect and beautiful student body president.
Her younger sister, Ryuka, is as popular as an idol and is always at the center of the crowd.
The younger brother of the two perfect and idolized sisters is Mizuki, an extremely ordinary schoolboy.
From a young age, Mizuki is teased by the cool and perfect Ema, while Ryuka, who is strict with her brother, treats him like a follower.
The two older sisters …… finally realize the existence of their girlfriend, without even thinking that spring has come …… to the younger brother.
Mizuki’s spring is suddenly snatched away from her. ……
Mizuki is exhausted,…… and Ema, who can’t stand to see her brother so tired,……, takes off her own skin or two,…….