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?
the mood in the classroom 
became increasingly congenial.
Die ganze Atmosphäre im Klassenzimmer
ist freundlicher geworden.
y el ambiente de la clase
mejoró muchísimo.
y el ambiente de la clase
mejoró muchísimo.
en plus de rendre
l’atmosphère du groupe plus chaleureuse.
L'atmosfera si fece pian piano più piacevole.
e o clima na sala de aula
se tornou mais tranquilo.