Nobody talks about this one. A single episode that treats a band's music as narrative architecture, not just soundtrack, each song doesn't accompany the story, it IS the story. The emotional weight lives entirely in how Kuusou Iinkai's sound shapes what you see, moment to moment. If you've ever felt a song understand something about you that words never could, this is that compressed into pure visual form. Twenty minutes that prove you don't need a plot when the music already knows what it's trying to say.
Naniiro no Nani is a short single-episode ONA from 2018 that grew out of the songs of the band Kuusou Iinkai. Ryuuichi Miura, the group's vocalist, wrote it, and the band also performs its theme song. Its genre labels are music and slice of life, so it pairs the band's work with everyday storytelling in a brief, compact format.