You enter the playroom.
It isn't like the other areas of the House that you've visited. The room is simple, and you can see the door on the other side easily - probably leading to the key piece holder here. A couple of toyboxes sit quietly, and they don't spring out at you or try to attack you when you step by them. There's only a purple rug sitting on the hardwood floor, and, on top of that, a small piece of paper and a teddy bear.
Bai is flickering like crazy at you, trying to keep you from stepping any further into the room.