週刊ヤングサンデー
is a Japanese manga series written and illustrated by Masami Yuki. His initial attempt with the story ran in Shogakukan's "Shōnen Sunday Zōkan" from 1985 to 1988. In 1996, the story was made into a four-part original video animation (OVA) directed by Yoshiaki Kawajiri. The character designer and animation director for the series was Kumiko Takahashi. In 2003, Yuki began the second serialization under the title "Birdy the Mighty Evolution" in Shogakukan's "Weekly Young Sunday", later continued in "Big Comic Spirits", and finished in 2012.