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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.
18 Cast Members
Ayana Taketatsu
Ako Suminoe (voice)
12 Episodes
Yuiko Tatsumi
Riko Suminoe (voice)
12 Episodes
Ken Takeuchi
Keita Suminoe (voice)
12 Episodes
Yoriko Nagata
Miharu Mikuni (voice)
12 Episodes
Asami Imai
Yuzuki Kiryu (voice)
12 Episodes
Asuka Ohgame
Mikazuki Kiryu (voice)
12 Episodes
Tomoyuki Shimura
Keita Suminoe's Father/Suminoe (voice)
10 Episodes
Kiyotaka Furushima
Toda Edogawa (voice)
10 Episodes
Daisuke Matsuo
Chiba (Keita's Friend) (voice)
8 Episodes
Tomoe Hanba
Ako and Riko Suminoe’s Mother/Suminoe (voice)
9 Episodes
Shunzo Miyasaka
Kawasaki (Keita's Friend) (voice)
8 Episodes
Yui Ogura
Girl (voice)
6 Episodes
Kaori Ishihara
Girl (voice)
6 Episodes
Yukika Teramoto
Keita Suminoe (Child) (voice)
3 Episodes
Hideki Nakanishi
Boy (voice)
1 Episodes
Ryo Kuratomi
Boy (voice)
1 Episodes
Junta Terashima
Passerby (voice)
1 Episodes
Yuu Maruyama
Aunt (voice)
1 Episodes
