A lullaby made visible. The song doesn't explain itself, it just holds you while something wordless happens on screen. This is what comfort actually looks like when it stops trying to entertain you and starts trying to soothe you instead.

Sora to Umi no Komoriuta is a single-episode music video built around the song of the same name, sung by Masaaki Sakai. The piece was shown on Minna no Uta, a program broadcast by NHK. It is a short work where the song leads, with the animation made to accompany Sakai's track rather than to tell a longer story.