Certain Scientific Accelerator 4

A champion doesn't have to play nice to be on the side of good. Scavenger, a group of girls from the Dark Side of Academy City, have run Kato and Estelle ragged. But the strongest and most unsavory ESPer that Academy City has ever produced shows up just in the nick of time! It's villain vs. villain, in this story of an anti-hero who is Academy City's last hope!