How I see peter iii (the show "the great")with a sister.
By the off chance yn wasn't married off or was arranged for someone, peter would make it his job. I see peter not really seeing yn as a woman, but blood. Therefore he believes the she deserves the best. I can see plenty of men kissing up to peter so that he'll set them up with his sister. I can see him being protective of yn since childhood because she's a female. He'll believe that yn is lower than him like everyone else, but she herself is higher than everyone else. Those who disrespect yn end up dead by the order of the emperor.
Other
Yn is the opposite of the late empress. Yn is kind and selfless. Women of the court (knowing how her brother is with her) would use her to get higher up in the ranks and try to frame themselves as her friend. Yn likes how her aunt is, she seems more fun. Yn likes to learn about other countries. She'll even tell her brother what she found out the she knows he'll be interested in, for example, facts about concubines. Marial is completely against telling yn about the cou (don't know how to spell it) since she's the emperors sister and she cares for him. Yn is a caring aunt.
