Explosive J-pop vocals over a sugar-rushed electronic beat that practically vibrates off the screen. "Super Noisy Nova" by Sphere is an anime tie-in single from 2009 that channels that late-2000s idol energy where everything is bright, fast, and slightly overwhelming in the best way.
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The title track is pure caffeinated pop with vocal harmonies stacked so tight they blur together. "Dangerous girls" pulls back slightly into a cooler, more confident groove. The off-vocal versions reveal how dense the instrumental arrangements actually are underneath all those voices.
Just four tracks, but relentless. If you're into that era of anime OPs where the energy never drops below a ten, this one delivers exactly that.