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?
From your perspective, I came from 
the world that is a distance of 85 away.
Von hier betrachtet bin ich aus einer
Welt gekommen, die 85 entfernt ist.
Vengo de 85 mundos alejados de este.
Vengo de 85 mundos alejados de este.
Ça veut dire que je viens
du monde numéro 85.
Stando a quanto dice qui,
Do seu ponto de vista, eu vim de
um mundo distante de valor 85.
Для тебя я человек, который пришёл из мира
на восемьдесят пять дальше твоего.