["In this body" seems like enough of a clue. He's just not sure whether to consider that she's turned into a child or has switched bodies entirely, but it's seemong likely that she's not actually a child.
When she comes to the door, Jade answers. But he looks directly ahead of him, pretending not to notice the little girl.]
Action
When she comes to the door, Jade answers. But he looks directly ahead of him, pretending not to notice the little girl.]
My, my. It seems that no one's here.