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-
The gears turning in my head 
steadily stopped meshing together.
المسنّنات التي تدور في رأسي بانتظام
توقفت عن التشابك معاً
Die Räder in meinem Kopf
griffen plötzlich nicht mehr ineinander.
Los engranajes de mi cabeza
dejaron de funcionar juntos.
Los engranajes de mi cabeza
dejaron de funcionar juntos.
Les engrenages
qui tournaient dans mon esprit
Gli ingranaggi della mia mente 
hanno smesso di collimare.
As engrenagens que rodavam em minha
cabeça começaram a não se encaixar.
Шестерёнки, которые крутились у меня 
в голове, перестали стыковаться.