A single song about childhood becomes a quiet argument for why growing up doesn't have to mean forgetting who you were. The animation moves like memory itself, simple, patient, never rushing to explain. You finish it in four minutes and sit there anyway, because something about the way it sounds made you believe in gentleness again.

Kodomo Kokoro is a single-episode music video made for the song of the same name by Ikusaburo Yamazaki. The piece appeared on NHK's Minna no Uta. As a music video, it is built around one song rather than an ongoing story.