Kawaguchi Yumiko(川口由美子)

Kawaguchi Yumiko is a Japanese Adult Video (JAV) actress who debuted around 2010. Based on available information, her career appears to have spanned at least a few years, with known releases occurring until around 2012. Her work is primarily categorized within the mature woman ("熟女", *jukujo*) genre, often featuring large breasts ("巨乳", *kyonyuu*). The titles suggest a focus on themes of infidelity and hidden desires, portraying the actress as a sexually liberated older woman. While the available data is limited, there isn't clear evidence of significant genre evolution during her active period. Her known appearances were primarily produced by Athena Eizo, a studio known for its mature-themed content. She also appeared in at least one series, "この熟女いやらしい！" (*Kono Jukujo Iyarashii!*, "This Mature Woman is Naughty!"). In summary, Kawaguchi Yumiko is a JAV actress known for her roles in the mature woman genre, emphasizing themes of female sexuality and secret affairs. Her performances showcase a confident and sensual persona, aligning with the typical characteristics associated with the *jukujo* category.