Twittering Birds Never Fly: Don't Stay Gold Anime adaptation of the short story "Don't Stay Gold", to be included in volume 7 of the manga. Details Casts Videos Galleries Posters Title Twittering Birds Never Fly: Don't Stay Gold Release Date 2021-03-01 Runtime 00 Hours 24 Minutes Genres Animation Drama Production Companies GRIZZLY Production Countries Japan Hiroki Yasumoto... Kanji Kageyama (voice)... Yuki Ono... Kuga (voice)... 「囀る鳥は羽ばたかない Don’t stay gold」PV (Trailer) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1000x1429) Original Size (1000x1426) Original Size (1224x1718) Original Size (2000x3000) Original Size (500x750) Original Size (500x750)