Boku ga Aishita Subete no Kimi e
English title: To Every You I've Loved Before
Japanese title: 僕が愛したすべての君へ
Type: Movie
Episodes: 1
Source: Novel
Genres: Romance, Sci-Fi
Studios: Bakken Record
Duration: 1 hr 42 min
Rating: PG-13 - Teens 13 or older

A world where it has been established that people routinely swing between slightly different parallel worlds...

Koyomi Takasaki, who lives with his mother following his parents' divorce, enrolls in a local university prep school. Due to the atmosphere concentrated on studies and his social awkwardness, Koyomi is unable to make friends. One day, he is suddenly approached by his classmate Kazune Takigawa, who tells him that she has travelled from the 85th world where she and Koyomi are lovers.

(Source: MAL News)