The animation doesn't just match the song, it becomes the song. Every frame is deliberately placed to land on a beat, every color shift and camera cut designed to make you feel the percussion in your chest. You watch a single music video and understand why people rewind it ten times. Marie Yasui builds something that shouldn't work in 90 seconds, supernatural action that moves like a rhythm, not a narrative. It costs nothing but time. It demands everything else.

Fight Song is a single-episode music video made for Eve's track of the same name, with Marie Yasui in the director's chair. The song also played over the credits of the Chainsaw Man anime as its twelfth ending theme. It is a short action and supernatural music video built around Eve's song.