Mitsui Yasuko(三井保子)

Mitsui Yasuko is a Japanese Adult Video (JAV) actress who appears to have begun her career around 2010. Based on the titles and genre tags associated with her work, she primarily performs in the mature woman (熟女, *jukujo*) category. Her early work, around 2010, seems to focus on a wider range of mature themes, including titles featuring ejaculation, group sex situations (3P/4P), and even some niche fetishes like bedwetting. She worked with studios like Four Dimension/Emanuelle and Manbow around this time. Later in her career, around 2015, she appeared in series like "Girimoza Sori Sori Jukujo" (ギリモザ剃り剃り熟女), suggesting a possible move towards more niche fetish content, including close-up shots of the pubic area and other fetish-related acts. Ruby seems to be a key studio she has worked with in this period. She has appeared in several series, indicating a level of popularity and consistent demand for her performances within her specific genre. Overall, Mitsui Yasuko's career appears to be centered around mature woman content with a gradual shift, perhaps, towards more niche fetish themes over time. She has worked with a number of studios, and her involvement in several series suggests she has carved out a niche for herself within the JAV industry.