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?
But until I spoke to you 
after school, Takasaki-kun,
Aber bis ich nach der Schule
mit dir gesprochen habe,
Pero no me di cuenta del shift
hasta hablar contigo.
Pero no me he dado cuenta del shift
hasta hablar contigo.
Pourtant, je n’avais pas remarqué
en avoir fait un
Però
Mas eu não notei a mudança acontecendo
até falar com o Takasaki depois das aulas.
Вот только… до того, как тебя окликнуть,
я даже не заметила, что сместилась.