He is the crown Prince and also Zen's older brother. He also doesn't like the idea of Shirayuki being close to Zen, but knows that Zen is deeply in love with her.
During Shirayuki's mission in the snowy kingdom of Lyrias, he borrows Mitsuhide's name, Rouen, and pretends to be a royal palace pharmacist who works with Shirayuki.
As he observes Shirayuki and her efforts to help people, he slowly begins to respect her.
