Initially starting as an exclusive actress for , she later transitioned to work with the label Kawaii . In just over a year, she has appeared in over 50 titles, showing a high level of productivity. Key Programs/Titles Include:
: Frequently marketed as having a "9.5 head-body ratio," a term used in Japan to describe a exceptionally small face relative to a long, slender body. kosaka nanaka av program
: Her filmography has expanded to include diverse themes such as: "Stepdaughter" scenarios (e.g., April 2025 release ). Initially starting as an exclusive actress for ,
Kosaka made a high-profile debut in February 2024 under the series, a label known for scouting high-spec newcomers. Her debut work, SONE-042 , focused on her impressive height and "super model" proportions. kosaka nanaka av program