He'll give her a little wave--and then shoot up in the air ahead of them. No problem, nothing he hasn't done before. There is a lot of bright lights, screaming, and banging noises as he darts off in the opposite direction, being followed by a rather large crew of people screaming all kinds of things, from obscenities to asking the others to wait up, to yelling about freedom or something or another.

About four or so minutes go by after this. He has not come back yet.

He just failed to account for the fact one of them might stay behind. Here's hoping Yonaka is really prepared to use that knife, because it seems all the demon sees is something to eat. At least it's not Cranber. He can't risk running back to check on her until he's sure the coast is clear.