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 revealing more of yourself to others 
or learning what others think of you,
بكشف المزيد عن نفسك للآخرين
،أو معرفة نظرة الآخرين لك
Indem man mehr von sich preisgibt
oder erfährt, was andere von einem halten,
Al revelar más de ti a los demás
o descubrir qué piensan de ti,
Al revelar más de ti a los demás
o descubrir qué piensan de ti,
Rivelando più aspetti di te stesso agli altri,
 o scoprendo cosa pensano gli altri di te
Ao se abrir para alguém ou quando
você sabe o que pensam sobre você,
Открывая себя другим или изучая, 
что другие о тебе думают, ты можешь