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 the answer this man had arrived at
Der Rettungsweg, den er fand,
war eine Zeitreise.
Al final el método en el que se fijó
fue el desplazamiento temporal.
Al final el método en el que reparó
fue el desplazamiento temporal.
Le seul moyen qu’il ait trouvé
pour la sauver
E alla fine fu in grado 
di raggiungere il suo scopo,
E a resposta a que ele chegou
foi o deslocamento de tempo.
Но он нашёл способ спасти подругу —