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 therefore I was 
unable to be considerate.
und helfe anderen darum nicht,
wenn sie Hilfe brauchen.
soy incapaz de actuar con tacto.
soy incapaz de actuar con tacto.
je suis apparemment incapable
d’agir avec considération pour autrui.
e, di conseguenza,
 non sapevo agire con empatia verso gli altri.
Portanto, não posso agir como se eu
me importasse com outras pessoas.
но ещё и не понимаю,
что чувствуют окружающие.