Yuu Maruyama

Set in a family restaurant in Hokkaido, the northern prefecture of Japan, 16-year-old high school student Sōta Takanashi works part-time along with his strange co-workers: Popura Taneshima, a high school girl who—despite being a year older than Sōta—is easily mistaken for a elementary/middle schooler, and Kyoko Shirafuji, the 28-year-old store manager who does not bother to do any work at all.

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.

Set in a family restaurant in Hokkaido, the northern prefecture of Japan, 16-year-old high school student Sōta Takanashi works part-time along with his strange co-workers: Popura Taneshima, a high school girl who—despite being a year older than Sōta—is easily mistaken for a elementary/middle schooler, and Kyoko Shirafuji, the 28-year-old store manager who does not bother to do any work at all.

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.