Portal:Anime and manga/Anniversaries/May/May 31

May 31:

OVA/ONA series Television series and specials
 * 1996 – Sonic the Hedgehog
 * 1977 – Piccolino no Bōken finishes airing on TV Asahi
 * 1985 – Persia, the Magic Fairy finishes airing on NTV
 * 1992 – Oniisama e... finishes airing on NHK