Wait i just started reading, didn’t they have sex so he knows that he is a guy right?

He knows, he admitted that he knew since their first night but he didn't say so until the truth was exposed by the princess

I see, because it’s weird if he didn’t know right like how dumb he is? Lmao anyway thank you

No worries, our little uke was super worried, but when the princess told everyone the emperor admitted to knowing, and he also said that he didn't mind at all