Portal:Anime and manga/Anniversaries/September/September 1

September 1:

Book releases Manga serialization Film releases OVA/ONA series Television series and specials
 * 1984 – Legend of the Galactic Heroes Side Stories (vol.1) by Yoshiki Tanaka
 * 1969 – Triton of the Sea by Osamu Tezuka begins serialization in the Sankei Shimbun
 * 2001 – Cowboy Bebop: The Movie
 * 1991 – Slow Step (vol.4)
 * 1993 – Idol Defense Force Hummingbird (vol.1)
 * 1996 – Gunsmith Cats (vol.3)
 * 1971 – Shin Obake no Q-tarō begins airing on NTV
 * 1974 – Mazinger Z finishes airing on Fuji TV
 * 1996 – Neighborhood Story finishes airing on TV Asahi
 * 1996 – Remi, Nobody's Girl begins airing on Fuji TV