Kamishiro Rui is a second-year student at Kamiyama High School. He is a member of the musical show unit Wonderlands x Showtime.Nene's neighbor and childhood friend, Rui is an easy-going genius. He's meticulous about making every show the best it can be, making use of his flair for technology and inventiveness. He even builds robots to use on stage. His somewhat unique way of thinking often gets him labeled as a weirdo.After about 2 months of dating Tsukasa and Rui, they started dating.