One track. Kobaryo remixing KAF is speedcore meeting virtual singer energy, and the FTN-Remix tag means this goes hard. Kobaryo's known for breakcore and speedcore that pushes BPM into the red, and applying that to a rhythm game context across every modern platform means this was designed to test your reflexes.
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Single track releases like this exist to be the hardest song in whatever rhythm game features them. The multi-platform spread suggests this landed in a major rhythm title. One song, maximum intensity, Kobaryo's signature relentless energy filtered through KAF's vocal presence.
If you play rhythm games for the challenge charts, this remix is probably already haunting your failure screen.