The aloof, quiet, and mischievous bassist of Kessoku Band, who has a cool demeanor and an androgynous appearance, to the point that she sometimes attracts other girls (including Kita) without intending to. She often spends what allowance she gets from her family on new music equipment, which leaves her with little money for anything else, to the point of eating weeds when she has no money for food. After falling out with her last band over creative differences, Ryo was convinced by Nijika to start a new one with her. Her surname comes from Takahiro Yamada. She plays an Olympic White Fender Precision bass.