Mizushima Ryoko(水島良子)

Mizushima Ryoko is a Japanese Adult Video (JAV) actress who appears to have debuted in the early to mid-2000s. Based on available information, her career spans well over a decade, with releases continuing into the late 2010s. Her work is primarily centered around the mature woman (熟女, *jukujo*) genre. Recurring themes in her films include infidelity (*furin*), exhibitionism (*chijo*), and depictions of married women and housewives (*hitodzuma/shufu*). Many of her works feature elements of hardcore and lewd behavior (*inran/haado-kei*), as well as group sex scenarios (3P/4P, orgy). Some titles also indicate a focus on large breasts (*kyonyuu*). Looking at the available titles, there doesn't appear to be a drastic shift in her genre focus over time; she consistently works within the *jukujo* and related subgenres. She appears in several series, including "Moe yo Okusama!" ("Burn, Housewife!"), "The Gibo Zukan" ("The Mother-in-Law Encyclopedia"), and "Jukujo Darake..." ("Full of Mature Women..."). The studio NEXT GROUP appears frequently in her filmography, alongside MARX. Overall, Mizushima Ryoko is a mature actress known for her work in JAV focused on married women, infidelity, and exhibitionism, often with hardcore elements and group sex. She's been a consistent presence in the *jukujo* genre for many years.