Koyama Chiaki(小山千秋)

Koyama Chiaki is a Japanese adult video (JAV) actress whose career appears to have begun in the mid-2000s, with available work spanning roughly from 2005 to 2012. This suggests a career length of around 7 years, though it's possible she may have worked outside of this timeframe. Analyzing her filmography reveals a tendency towards fetish-based genres, particularly those involving school uniforms and bloomers (buruma). Other prominent themes include bondage (shibari/kinbaku), group sex (3P/4P), and, in some cases, more hardcore or depraved (inran/hard-kei) scenarios. The "Hairless" series indicates a foray into specialized fetish content. Her work also involves themes such as older women (OL, married women/housewives) and incest. Over time, there appears to be a shift or expansion of genres, with later titles including a greater emphasis on group sex and more mature themes. Some of her work is associated with studios such as Media Bank, Kasakura Publishing, Crystal Eizo, and Uchuu Kikaku (Cosmos Planning). Some of her films have been remastered using AI technology for modern viewing. Overall, Koyama Chiaki's work is characterized by a focus on fetish content with a particular emphasis on school uniform and bloomer themes. Her filmography also suggests an interest in exploring a range of other genres, from hardcore to more mature themes.