The next morning, itaru tells itaru-san that it's okay that he's fine, but that he needs to get some rest. It's a good thing he didn't tell his mom about it, because she'll be able to figure out who he is from the look on his face. The next day, they're going to start training itaru to look like his mom. They're not going to let anyone else in the house find out that they've lost their kid, so they'll have to stand around looking for him until they can find him. It sounds like a lot of work, but it'll pay off in the long run.