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-
If someone asked me whether I was 
happy right now, I'm sure—
لو سألني أحد فيما إذا كنت سعيداً
—الآن، فأنا متأكد
Würde mich jetzt jemand fragen,
Si alguien me pregunta
si soy feliz, respondería…
Si alguien me pregunta
si soy feliz, estoy seguro…
Si on me demandait,
Se qualcuno mi avesse chiesto 
se fossi felice, sono certo—
Se alguém perguntasse se
estou feliz, com certeza—
Если бы в этот момент меня спросили,
счастлив ли я, то я бы...