The anime is based on a short story Yoneda wrote about Kageyama and Kuga’s first meeting. The OVA is included in the special edition of the seventh volume of the manga.
Alt. title: Saezuru Tori wa Habatakanai OVA, Twittering Birds Never Fly OVA
囀る鳥は羽ばたかない Don’t stay gold
Aired: Mar 1, 2021
Duration: 23 min.