Ishino Yoko (Shirai Eriko)(いしのようこ（白井エリコ）)

Ishino Yoko, also known under the alias Shirai Eriko, is a Japanese Adult Video (JAV) actress whose career appears to have spanned roughly from the late 2000s to the mid-2010s. Based on available information, her career lasted for approximately 7-8 years. Her work history reveals a strong focus on niche genres, particularly those involving mature women. Recurring themes include "milf" or married woman content (人妻・主婦), often featuring lactation or breastfeeding (母乳). Pregnancy (妊婦) and related scenarios such as *nakadashi* (中出し) also appear frequently, especially in her earlier works. There is also some interest in fetish content such as enema play (浣腸) and watersports (飲尿). Over time, her work seems to have maintained a consistent focus on the above-mentioned genres, although compilations and best-of releases became more prominent later in her career. She has worked with a number of JAV studios and makers including ZOOM, ROOKIE, 桃太郎映像出版 (Momotaro Eizou Shuppan), WOMAN and クロス (Cross), with Cross being a frequent collaborator. She appeared in the "マニア通信" (Mania Tsushin) series. Overall, Ishino Yoko's performances seem to have centered on a combination of mature appeal, lactation fetish, and pregnancy themes, often with a slight leaning towards abnormal or niche content.