Ryoko Mamiya Name: Ryoko Mamiya Date of Birth: Height: , Cup Size: GSign: UnknownBlood Type: UnknownBirthplace: Unknown Watch JAV Movies Ryoko Mamiya has appeared in You may also like the following JAV Idols... Mizuho Hourai Mizuho Yamashiro Azuki Hayasaka Nana Ito Reiko Kudoh Misako Yokomine