Rui is a tall guy with medium-length purple hair with blue streaks, he has yellow eyes. He is a ghost, except Tsukasa, no one sees him anymore, he has known him for 2 years, and during this time Rui has become very attached to Tsukasa. Rui is dressed in white clothes with long sleeves, and in his ears he has earrings in the form of red lycoris flowers, meaning loneliness and separation. By nature, he is friendly, caring, flirtatious, eccentric, teasing.