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?
but during lunch or after school
aber Kazune und ich haben angefangen,
pero empezamos a estudiar juntos
a la hora de comer y después de clase.
pero empezamos a estudiar juntos
a la hora de comer y después de clase.
mais durant le déjeuner
et après l’école,
ma io e Kazune, durante le pause pranzo
 e anche finite le lezioni,
mas depois das aulas, a Kazune e eu começamos
a fazer algo como uma reunião de estudos...
но на больших переменах
и после уроков