Forty-five tracks for a mobile SRPG and somehow most of them go way harder than they need to. This collection bounces between seasonal event themes with shocking range. The pool episode tracks (飛沫舞うデイプール, 涼やかなナイトプール) are breezy and bright, then 絶望、来たりて drops in with full orchestral menace like a completely different game.
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轟く祭囃子 captures festival energy with pounding taiko and frantic flutes. The school-life arc tracks (クラスルーム・ランアウェイ, スクールライフ) have this bubbly pop sensibility that works way better than it should. "BLACK SIREN" goes genuinely dark.
The emotional whiplash is the whole point. If you think gacha games can't have real soundtracks, this one will change your mind.