Story
Music — 1 episode, Finished.
Music video directed by Ai Niina for the song Tsubame by YOASOBI with midories. Note: The song featured in this music video is also used as the theme song to the NHK children SDGs program "Hirogare! Irotoridori". There also exists two versions of this video; the first being a Japanese version uploaded on December 2, 2021 and an English version of the song titled "The Swallow" also by YOASOBI, which was uploaded on November 3, 2022.
Synopsis via AniList (English).
