"Huh? Yeah, I am. How did you know?" He looks confused for a moment before he nearly gets smacked by a punch from the false Sunday. He rushes the creature and shoves it with his shoulder - using a surprising amount of force.

He starts shoving the thing back into the mirror. "Nope, nope. Back into there you go." Never mind that he himself came out of a mirror. It's Fine. As the other Sunday finally ends up getting pushed down he smashes the mirror with the pommel of his sword. ... It looks like a nice sword that he probably shouldn't do that with, but eh. That done he sheathes his sword and turns to Sunday.

"Are you okay? I uh... I can't heal super well, sorry." The few spells he does have for that are kind of overkill.