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-
I pray from the bottom of 
my heart that happiness
أدعو من أعماق قلبي أن تشرق السعادة
Ich bete von ganzem Herzen, dass euer Glück
wie Sterne auf euch regnen wird.
Deseo con todo mi corazón
que esa felicidad
Deseo con todo mi corazón
que esa felicidad
Du plus profond de mon cœur,
j’espère que le bonheur vous éclairera
Prego nel profondo del mio cuore che la felicità
Do fundo do meu coração,
espero que a felicidade
Я молюсь всем сердцем, чтобы на каждого
из вас счастье снизошло, как сияние звёзд.