久我山 昌信

A well-mannered second grader attending Kujougaoka Academy who isn't afraid to be honest about his perversions. Moving to Tonan city, he reunites with his long-separated little sister and embarks on a new chapter of their lives together. It's during his initial arrival that he encounters Sayaka, who becomes his guide and introduces him to the Three Stars Club. Intrigued by their activities, Masanobu eagerly joins the club alongside his sister and classmates. His past experiences working numerous part-time jobs have bestowed him with a wide range of knowledge, from cooking to computer skills, making him a valuable asset in various fields.