While struggling to make friends after his parents’ divorce, Koyomi Takasaki meets Kazune Takigawa, but apparently, they already have. Kazune reveals that she’s from World Line 85, an alternate universe in which she and Koyomi are lovers. But in a reality where moving between dimensions is natural, could Koyomi be the one from another world?
Nevertheless, even though 
she said not to even greet her,
Obwohl sie gesagt hat,
ich soll sie nicht einmal begrüßen,
Aunque me dijo que ni la saludara,
Aunque me dijo que ni la saludara,
Elle qui ne voulait pas
qu’on se salue
Anche se mi aveva detto 
di non salutarla di nuovo,
A propósito, mesmo depois de
dizer para não ir cumprimentá-la,
Но хоть она сама
и сказала не здороваться,