Rui Kamishiro is a serious, cold-blooded and kinda flirtarious guy. He likes to tease and annoy people. He also never gives up. As a Dark Prince he is really good at fighting, it’s almost impossible to defeat his skills. He is a future king, who looks for a new adventures. His hair are purple and he got a blue streak on it. He has a yellow eyes and his body is really muscular, he also is tall. He also knows a Light Princess. They were together but they broke up.