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'll look forward to seeing that view.
Ya veremos ese paisaje nocturno
otro día.
Ya veremos ese paisaje nocturno
otro día.
J’ai hâte de voir
ce paysage nocturne.
Non vedo l'ora di vedere 
questo panorama di cui parli.
Vou aguardar ansiosa
por essa vista noturna.
Буду с нетерпением ждать…
когда ты его мне всё-таки покажешь.