Aoba, who lives a pretty ordinary life, works at the junk shop "Mediocrity." The manager asks him to make a delivery one day, but he finds out that there's nothing at the address he was supposed to deliver it to. It was then that Aoba was consumed by light and he was within a mysterious world.
Oh, did I forget again?
أوه، هل نسيت عمل ذلك مجددا؟
Oh, hatte ich es wieder vergessen?
Ab morgen passe ich besser auf.
¿Volví a olvidarlo? Tendré 
más cuidado a partir de maña...
¿Se me olvidó otra vez? Tendré 
más cuidado a partir de maña...
Ah,
Ah, eu esqueci de novo? 
Vou tomar mais cuidado.