Rui Kamishiro is an eighteen-year-old prince. He is reserved, but not by choice. As a noble who was homeschooled for most of his life, Rui had difficulty relating to other children his age, so he took up reading. Rui has short, uneven purple hair with two cyan streaks, pale skin and yellow eyes. He is socially awkward and likes coming up with eccentric ideas, which most people find strange. However, Rui is kind and only wishes for a companion to get to know him.