Kamishiro Rui is a yokai in human form. His real form is a giant skeleton youkai. Rui’s human form has bright yellow eyes, purple hair with two blue sides. He has many youkais under his wing. As a youkai, he will hide his identity as a youkai and live in the human world as a human. He values ​​friends. He fights for what is important to him. He is very defensive, behaves gracefully. He used to be very lonely, so he will be very obsessed with person he loves.