Synopsis: Nana & Kaoru (Colored)

In the world of sadomasochism, 17-year-old Kaoru Sugimura finds pleasure through the discovery and maintenance of various types of erotic knots and paraphernalia. Despite his passion for this fetish, Kaoru feels unfulfilled without a partner to explore it with. His childhood friend, the beautiful vice-president of the school's student council, Nana Chigusa, has always been the focus of Kaoru's affections. However, their opposing personalities and Nana's intense focus on academics, in contrast to Kaoru's neglect of his studies, have strained their friendship. To keep Kaoru's S&M equipment safe from his mother's disapproval, she secretly entrusts them to Nana, who becomes disturbed by his interests but curious about the allure of the leather outfit. Accidentally locking herself in, Kaoru comes to her rescue and introduces her to the world of S&M as a helpful release from the stresses of school. Nana eagerly suggests exploring more erotic stimulation sessions with Kaoru, which he happily obliges.