Early 2000s J-pop with that PS2-era anime game polish. Rina Aiuchi's Over Shine single gives you three vocal tracks plus their instrumental versions, and the vocal performances carry this confident, bright energy that defined the era.
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"CODE CRUSH" has more edge to it, pushing into uptempo territory with a hook that sticks. "Ruby stars" slows things down just enough to breathe without losing momentum. Six tracks total, half vocal, half instrumental. Clean and deliberate.
The instrumentals actually stand on their own too, which doesn't always happen with J-pop game tie-ins. If you miss the days when PS2 games came with proper vocal theme songs from real artists, this is a perfect little time capsule.