CHALK
"Maybe it's an illusion, or something, because that's a weird thing to be resistant to- a laser, huh, how do you get a resistance to a laser-- GOT IT!"
He'd been babbling to distract himself, hitting the wall on the other side, hardly finding a blood-free space to draw on. But he still got one, shaking hands wetting down the chalk with disgusting red but still workable-! Just... a small door.
But it worked. Kazu broke into a grin, mind blank, turning around and ducking a swinging leg, "MANIC. Get over here!" Where 'here' was. Didn't matter. They were getting through that door, and... hopefully that cleaver wasn't actually made out of magic chalk; hopefully, the door closed. Well, they'd see.