Looking for bl (?), gender swap thing

Looking for this manga, that is a fantasy gender bender bl story. The mc is the hero (ml) best friend, he acts as the mom of the party. He wears something martial arts related like chun li’s outfit with pants and a long chinese (?) top. The setting is in medival fantasy with kingdoms and stuff. The story I remember is that he MC somehow becomes a woman. Then like their traveling prince friend like sees a beauty from the castle window, but he dint know it was MC. Then they went on a date and ML was like being very jealous. I dont know if im mixing mangas but the aristoracts fighting over a vase???