Nah, he knows. It’s just the the sweet beb thinks he doesn’t know, and the emperor is playing along because, like, lulz or something. But he knows.
I think so too. Didn't the doctor with loose lips tell him during his many treatments for injury. He knows
Oh I see! I thought for a second that that guy is stupid!
Actually it’s kind of hard to tell with all the confusion in the translation, I even thought the doctor didn’t know until she spilled the beans to the princess!
Does he not know he’s a guy?