Seiko(Seiko。)

Seiko (せいこ) is a Japanese Adult Video (JAV) actress with a career spanning over a decade, having debuted around 2010. Her early work includes titles from MUTEKI and Madonna. She quickly became a familiar face in the mature woman (熟女) genre, which remains a significant part of her filmography. Her work frequently features themes and tags associated with mature women, including titles highlighting her as a "bimature woman" (美熟女), and often involving scenarios such as cuckoldry (人妻・主婦). Many of her performances showcase her performing fellatio (フェラ), often appearing in compilations dedicated to the act. She has also been involved in works featuring exhibitionism, bondage, and other niche kinks. Throughout her career, Seiko has collaborated with several prominent studios and labels. Fitch appears frequently in her filmography, and she has appeared in numerous compilation and best-of releases from both Fitch and Madonna, suggesting a strong working relationship with these makers. She has also been involved in series such as "The Lewd Polite Woman" (スケベな美熟女の淫らな敬語), "The Lewd Bimature Woman's Estrus Semen Play" (ドすけべな美熟女の発情ザーメン遊戯) and "Between Erotic Dreams" (淫夢（ゆめ）のあいだ). Seiko's performances often emphasize her mature appeal. Her filmography suggests a focus on delivering experienced and sensual performances, with an emphasis on fetish-oriented scenarios that are popular within the mature woman category of JAV.