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?
And in actuality we're currently 
researching Optional Shifting,
Wir forschen gerade
an einem Optionalsprung.
Estamos investigando el optional shift,
Estamos investigando el optional shift,
J’étudie moi-même la possibilité
de transferts orientés,
A dire il vero, stiamo facendo ricerche
 sullo spostamento opzionale,
Мы как раз работаем
над спровоцированным смещением.