Yeah, Toushirou is all for stopping the mafia, but . . . uh, mass murder is no. (He isn't close enough to Robyn or even Anthony to get pissed off to the point of being stupid enough to go on a murder spree.) He's not publicly out, though (just suspected by many of his schoolmates and teachers), and I doubt he'd want to change that right now. But finding other ways to take 'em down is something he'd be in for.