海のまにまに (Umi no Manimani) [Zom 100 OP]

This is YOASOBI in a more kinetic, sun-soaked register — a track built on forward momentum and the specific giddiness of survival-as-adventure. The rhythm section is foregrounded here more than usual, with a bass line that bounces rather than anchors, giving the whole production a loose-limbed quality that suits the zombie apocalypse source material in the most unexpected way. The anime it opens is fundamentally about rediscovering joy after numbness, and the song embodies that thematically: it doesn't sound like escape from horror but like someone genuinely delighted to be alive and moving. Ikura's voice is bright and quick, moving through the melody with an almost conversational ease that keeps the track from feeling effortful even at its most energetic. There's a lightness to the production — the synthesizers sit high and shimmer rather than drone, and the arrangement never becomes dense enough to feel oppressive. It lands somewhere between summer road trip music and the opening seconds of a video game level that you're finally confident enough to enjoy rather than fear. The song argues, without stating it, that the best response to a broken world is still to run toward the sea.