Synopsis: Nana & Kaoru

Kaoru Sugimura, a teenager of seventeen years, derives pleasure from practicing sadomasochism. His hobby involves experimenting with various erotic knots while maintaining his gear. Nevertheless, he feels incomplete without a partner to explore his collection fully. Kaoru has always desired his childhood friend Nana Chigusa as his ideal playmate. Nana, an attractive and popular student leader, serves as the vice-president of their school's student council. However, their relationship has deteriorated over time due to their conflicting priorities. While Kaoru focuses on his deviant interests, Nana stresses over her academics. Kaoru's mother, disapproving of her son's erotic tendencies and slack study habits, entrusts Nana with some of his S&M toys to safeguard them secretly. Curious, Nana tries on one of the leather costumes, but it ends up trapping her. Kaoru comes to her rescue, and Nana discovers that indulging in S&M helps her relax. Excitedly, Nana requests more sessions of erotic stimulation, much to Kaoru's satisfaction.