One: Kagayaku Kisetsu e
Japanese title: ONE ～輝く季節へ～
Alternative titles: One: To a Shining Season
Type: OVA
Source: Visual novel
Episodes: 4
Status: Finished Airing
Aired: Aug 10, 2001 to May 24, 2002
Duration: 27 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Arms
Producers: KSS
Genres: Drama, Supernatural

Orihara Kouhei returns to his town after a long disappearance to fullfil the promises he made to several girls in his childhood. He suffered from memory loss, and carries a tragic past. An strange ambience surrounds the OVA...It's almost like a dream, like memories from the past trying to come together in one piece but without being able to...

(Source: ANN)