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-
Imagine it's you inside the aquarium.
تخيّل نفسك داخل حوض السمك
Stell dir vor, du wärst
in diesem Aquarium.
Imaginen que son ustedes
los que están en el acuario.
Imaginad que sois vosotros
los que estáis en el acuario.
Imagine que tu es
dans un bocal, Takatsu.
Facciamo finta che ci sia tu dentro l'acquario.
Imagine que está dentro de um aquário.
Представь, что внутри этого
аквариума находишься ты.