Riku Yamaguchi Name: Riku Yamaguchi Date of Birth: Height: 158 cm, 5 ft 2 in Cup Size: ESign: UnknownBlood Type: UnknownBirthplace: Unknown Watch JAV Movies Riku Yamaguchi has appeared in You may also like the following JAV Idols... Mirei Kazuha Aki Fukatsu Kasumi Momota Yui Hasegawa Saki Momoka Ayaka Mutoh