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?
I eventually joined the Research Institute, 
where our paths crossed again.
danach habe ich ihn im Imaginärelement-
wissenschaftslabor wiedergetroffen.
más tarde me uní
al laboratorio de elementos imaginarios
más tarde me uní
al laboratorio de elementos imaginarios
je l’ai retrouvé quand j’ai eu une place
au laboratoire des sciences spéculatives.
più in là sono riuscita a entrare
 nel Centro di Ricerca Scienze Immaginarie
depois disso, eu entrei para
um laboratório de pesquisas
Спустя годы я устроилась в институт,
где мы случайно воссоединились…