Shikishima Ritsu was living a fulfilling high school life.
Then one day, when Ritsu heard the new song from popular idol, μ, he noticed a cry for help hidding within the song.
Ritsu tried to confirm it with his friends, but none of them would respond to his questions, and they even acted off.
The suspicious incongruities continued piling up until the new year's entrance ceremonies. Yet the new students entering the school were-
By punishing oneself, the individual 
hopes to avoid attacks from others.
بمعاقبة النفس، يأمل الفرد أن يتجنب
هجمات من الآخرين
Indem man sich selbst angreift, hofft man
sich vor Angriffen anderer zu schützen.
Al castigarte a ti mismo,
esperas evitar ataques de otros.
Al castigarte a ti mismo,
esperas evitar ataques de otros.
En se blâmant soi-même, on cherche
à éviter l’agression d’autrui.
Punendosi da solo, l'individuo
 spera di evitare attacchi da parte degli altri.
ao se punir, o indivíduo espera
evitar os ataques alheios.
Наказывая самого себя, человек 
надеется избежать агрессии других.