The anime is an adaptation of a light novel by Yoru Simino, which tells the story of a girl who’s terminally ill and an unnamed protagonist who discovers her secret.  The novel spawned a live action film adaptation, this anime adaptation, and a manga.

Subtitled showings will be on February 7 and an English dub will be shown on February 10.

The timing of the Fathom theatrical release is good for tie-in sales.  Seven Seas released the light novel this week, and the manga will be released in January (see “Seven Seas Goes on a Spree”).