Tsumugu is a member of Nudist Beach who aims to purge the world of Life Fibers after an incident involving his sister losing her life. Tsumugu is a tall, muscular man, possibly in his early or late twenties. He keeps his hair short and black with the exception of his bright red mohawk. Tsumugu has a keen hatred for Life Fiber uniforms, especially Kamui, as he believes that they are merely relying on their wearers as a food source and will eventually kill their wearer.