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?
Small Parallel Shifts are 
an everyday occurrence,
Kleine Parallelsprünge passieren jeden Tag.
Aunque ocurren parallel shifts
comúnmente,
Aunque ocurren parallel shifts
comúnmente,
Peu de personnes se rendent compte
des transferts parallèles
Gli spostamenti paralleli minori
 avvengono su base quotidiana,
Минимальные смещения
происходят с людьми каждый день.