Ishikawa Yumiko(石川由美子)

Ishikawa Yumiko is a Japanese Adult Video (JAV) actress known primarily for her work in the mature woman (熟女) genre. Based on available information, her career appears to have begun in the mid-2000s and extended for several years, possibly into the late 2000s. Her filmography showcases a strong focus on the mature woman demographic, often featuring themes like BBW/plump (ぽっちゃり) figures and busty (巨乳) women. Some of her earlier work also includes more niche fetishes such as bondage/kinbaku (縛り・緊縛) and group sex scenarios (3P・4P), suggesting a willingness to explore diverse roles within the mature genre. Ishikawa seems to be primarily associated with the studio Ruby, appearing in both standalone titles and series like "Rubi Super Selection" and "Iroji". This consistent association points to a strong working relationship with the maker. Her style can be generally characterized by her mature age appearance and willingness to perform in niche fetishes.