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?
I think you already know, 
but, I really do like you.
Du weißt das zwar schon,
aber ich liebe dich wirklich.
Creo que ya lo sabes,
pero me gustas de verdad.
Creo que ya lo sabes,
pero me gustas de verdad.
Je crois que tu le sais déjà,
mais je t’aime.
Immagino tu lo sappia già,
Eu acho que você sabe,
Думаю, ты и так знаешь…