Koyama Sachiko(小山幸子)

Koyama Sachiko is a JAV actress known for her work primarily in the mature woman (熟女) genre. Based on available information, her career appears to have begun around 2005 and extended for at least a few years, with releases appearing up until at least 2008. Her early work, particularly in 2005, frequently featured themes of infidelity (不倫) and impregnation (中出し), often within the context of travel or everyday scenarios, as evidenced by the "中出し不倫旅行" series and the "○○の叔母さんに中出し！！" series. These productions were released by Takara Eizo. Her roles often involved characters slightly older than the typical JAV demographic. Later in her career, as seen in the 2008 title "大年増 極楽の11人" from Gen'ei-sha, she participated in productions with a wider range of sexual acts, including lesbian and group activities. This suggests a possible shift or expansion in her genre preferences over time. While primarily associated with Takara Eizo early on, she also worked with other studios. Her style seems to center around portraying realistic characters in mature, often taboo, situations.