The film follows the story of , a woman whose relationship with her partner, Hooni, is strained because she finds sex uninteresting and feels like a beginner. Hurt by her lover's comments, she seeks out a "secret tutor" to help her transform her sexual life and gain confidence. Key Details Release Year: 2020 Country: South Korea Genre: Romance, Erotica Rating: Rated 19+ (restricted to adults)

The title you are referring to is a South Korean erotic film titled (original title: Secret Lesson ), released in 2020 . Movie Overview

For more information or to see community reviews, you can check platforms like Letterboxd or The Movie Database (TMDB) . Rated 19 Secret Lesson (2020) - Film + cast - Letterboxd

The cast includes actors typically found in the Korean adult cinema industry, such as Min Do-yoon , who frequently appears in similar themed movies like My Husband's Tutor and Schoolmistress 3 .