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?
Are you actually gonna 
tell me you never noticed?
Hast du das etwa nicht bemerkt?
¿No te habías percatado?
¿No te habías percatado?
Tu l’avais même pas remarqué ?
Non dirmi che... non te ne eri accorto?
Não vai dizer que nem percebeu, certo?
Только не говори,
что ты даже не заметил…