Responses
It looked like a female?
Not really, long hair was common for males in the joseon era. I may also be wrong and that wasn't YooYoung but another male slave/guard. Young masters tend to have topknots and the boy had his hair braided down.
Ohhh maybe
Their past life is very interesting! I bet the person eavesdropping could've been YooYoung who doesn't like YooYeon and will torment Kwon just to spite YooYeon