Portal:Anime and manga/Anniversaries/April/April 21

April 21:

Film releases OVA/ONA series Television series and specials
 * 2001 – Case Closed: Countdown to Heaven
 * 2001 – Crayon Shin-chan: The Storm Called: The Adult Empire Strikes Back
 * 2007 – Case Closed: Jolly Roger's in the Azure
 * 1988 – Appleseed
 * 1990 – Legend of Lyon Flare (vol.2)
 * 1991 – ARIEL Deluxe (vol.2)
 * 1991 – Sukeban Deka (vol.1)
 * 1994 – New Cutie Honey begins
 * 1995 – New Angel (vol.2)
 * 1968 – Kaibutsu-kun begins airing on TBS
 * 1990 – Mōretsu Atarō begins airing on TV Asahi
 * 2011 - Puella Magi Madoka Magica finishes airing in MBS, TBS, CBC