Well I did some research, turns out the piece has three names: Red Scorpion, Sasoribi and Anti-Ares.
It was composed by someone named Jun Wakita, who uses the alias "Virkato Wakhmaninov" (clever, huh?) it was originally developed for a Japanese game called "Beatmania" that's sort of like Guitar Hero except you press buttons and use a turntable, but it's now a somewhat popular piece for piano solo.