Rui Kamishiro is a young 18 year old jellyfish. As a human, he has thin, yellow eyes with red eyeliner along the crease, and uneven, choppy purple hair with two cyan streaks, as well as a tall, lithe figure. Genius and curious. Solemn, quiet, intelligent, occasionally teasing, pessimistic. Often compared to a cat. Was originally entirely jellyfish, suddenly turned into a human after being placed in a bathtub full of water. A delicate and calm boy.