優秀な教師と完璧な監視体制により、イジメ0を実現した高校。そこに通う1年生の清和は、中学時代にイジメられていた元クラスメイト・四条さんに出会う。イジメがないこの学校で、しだいに心を通わせていく2人。しかしある日、清和は四条さんがイジメられていたことを知る。そして彼女は、屋上から飛び降りた──。衝撃の“イジメ0”ミステリー!!
A high school that has achieved zero bullying thanks to excellent teachers and a perfect monitoring system. Kiyokazu, a first-year student there, meets his former classmate Shijo, who was bullied in middle school. The two gradually connect with each other at this bully-free school. But one day, Kiyokazu finds out that Shijo was being bullied. And she jumps off the roof. A shocking “zero bullying” mystery!!