Ano Hi no Kokoro wo Toraete
Japanese title: あの日の心をとらえて
Alternative titles: Seize Your Heart From That Day
Type: ONA
Source: Original
Episodes: 1
Status: Finished Airing
Aired: Oct 23, 2019
Duration: 7 min
Rating: G - All Ages
Studios: Sunrise
Producers: A-1 Pictures, Omnibus Japan, Tohokushinsha Film Corporation, Sunrise Music
Genres: Drama, Sci-Fi

The story is set in a town that preserves nature and its natural attractions using technology. It centers on a protagonist who has drifted apart from his childhood friend, and uses the FlatFormer to reconnect through time and space. 

(Source: ANN)