Yumiko Oku Name: Yumiko Oku Date of Birth: Height: , Cup Size: UnknownSign: UnknownBlood Type: UnknownBirthplace: Unknown Watch JAV Movies Yumiko Oku has appeared in You may also like the following JAV Idols... Kanon Ohzora Aki Kurotsuki Emiru Momose Yuhko Hoshizawa Kyoka Aoyama Shiori Aramaki