This soundtrack is so aggressively catchy it should come with a warning label. Youkai Watch's 2015 OST covers both the 3DS game and anime side, and the composers leaned all the way into bouncy, sugar-rush energy. Usapyon's Theme is this hyperactive little earworm that just lives in your head rent free.
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Then you hit something like Space Departure and suddenly the tone shifts into this weirdly cinematic orchestral moment for a kids' franchise. The Komasan Exploration Team Theme has that classic adventure-map feel, all upbeat brass and plucky strings.
So much personality crammed into every track. If you grew up on Level-5 games and never checked the full score, you're missing out on some of their best character writing done entirely through music.