The story begins with Keita Suminoe, a male third-year junior-high school student studying for his high school entrance exams. He is living in a home with his older twin stepsisters, Ako and Riko, who share no blood relation to him, and they help him prepare for his exams. Even though he initially dislikes himself for it, he begins to become attracted to his two step-sisters, and his two parents encourage him to eventually get married to one of them.
竹達彩奈
as Ako Suminoe (voice)
巽悠衣子
as Riko Suminoe (voice)
武内健
as Keita Suminoe (voice)
永田依子
as Miharu Mikuni (voice)
今井麻美
as Yuzuki Kiryu (voice)
大亀あすか
as Mikazuki Kiryu (voice)
Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6
Episode 7
Episode 8
Episode 9
Episode 10
Episode 11
Episode 12
