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?
In that case, why not follow 
through to the end, right?
Dann lass es uns doch
bis zum Ende durchziehen!
Así que decidí ayudarlo.
Así que decidí ayudarlo.
« Sortons ensemble
jusqu’à la date fatidique ! »
Mi sono detta che, però,
 gli sarei stata accanto fino all'ultimo.
Então vou acompanhá-lo até o fim.
А раз так,
я решила быть с ним до конца!