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?
Kazune fundamentally maintained 
her silent, cool, brilliant style,
Kazune hat normalerweise die coole
und ruhige Spitzenstudentin gespielt.
Ella mantenía
su estilo frío y taciturno,
Ella mantenía
su estilo frío y taciturno,
Kazune gardait
un air taciturne et froid en public,
Kazune di base mantenne
 il suo temperamento calmo e taciturno,
A Kazune tinha um estilo frio e tranquilo,
Обычно Кадзунэ строила из себя
молчаливого и неприступного гения,