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 would find nothing but fun 
memories wrapped in happiness.
لن أجد سوى ذكريات ممتعة تغلّفها السعادة
gäbe es da nur schöne Tage
voller Glück in meinem Kopf.
solo encontraría buenos recuerdos
llenos de felicidad.
solo encontraría buenos recuerdos
llenos de felicidad.
tout ce qui me vient en tête,
ce sont des jours heureux.
troverei solo ricordi divertenti 
e una sensazione di felicità.
só consigo ver memórias
divertidas e cheias de felicidade.
то там будут лишь весёлые 
и счастливые воспоминания.