|Akagi Kouhei赤城 浩平|
|Clothes||Necktie, School Uniform|
|Role||Childhood Friend, Classmate, Friend, High School Student, Schoolmate, Senpai, Step Brother, Waitstaff|
|Visual novels||Protagonist - Relations. Sister × Sister.|
Kouhei is a pretty average guy – he goes to school with his childhood friends and has a happy school life, he also works part-time at a resteraunt called “Blau” with his classmate Shizuka. However, Kouhei’s father has just decided to remarry since his wife died 10 years ago. Since so much time had passed, Kouhei had no reason to object. It turns out though, that he will also be getting 2 new sisters – popular senpai Kaori and shy kouhai Chisato.