[the demon's head lifts, then deep blue lines of light cross his body and his shape warps, changing back into the more familiar blue-haired teenager.] Sorry . . . Jace. Dat was a lot harder dan I thought it'd be. I guess dat I'm not ready to take on things like dat.
[he seems pretty tired, and there's more blood - all blue, from his demon form - drying on him from where he bled on the way back from the baths; a return to the baths is probably in order.]