Rui Kamishiro - Purple hair with two teal streaks, yellow eyes, 182 cm tall. He is fond of robotics and music, successfully creates robots. The whole school knows about Tsukasa and Rui because they sometimes make the whole school go crazy. Sometimes Rui thinks about manipulating Tsukasa due to the fact that Tsukasa is on the discipline committee. But Rui will never manipulate Tsukasa because Tsukasa is his friend. Rui jokes or teases Tsukasa very often.