Yamamoto (21), a new employee at a bookstore, harbors strong romantic feelings for his senior coworker, Hirose (23). Still a virgin with no experience with women, he turns to Madoka, a mutual acquaintance known for matchmaking, to help him not only grow closer to Hirose at work but also learn the art of sex from her. With Madoka's assistance, he sets up a chance encounter with Hirose after work, inviting her out for drinks. As their bond deepens over the night, Yamamoto suggests continuing at a hotel—but Madoka suddenly excuses herself, claiming work obligations. This, however, was all part of the plan. Left alone, Yamamoto confesses to Hirose, "I want you to be the one to take my virginity." At first hesitant, Hirose gradually gives in under the influence of alcohol, gently touching his nipples and groin. When Yamamoto asks if he can touch her, she playfully refuses, saying, "Not yet!" Receiving his first nipple licking and blowjob from the woman he admires most, his cock becomes unbearably hard. Guided tenderly by the experienced Hirose, Yamamoto experiences the best night of his life. Once penetration begins, Hirose herself becomes aroused, taking control in the cowgirl position and rhythmically grinding down, thrusting deep like in a yoga pose. They climax together in a powerful, mutually satisfying finish. At the end, he shyly adds with a smile, "A friend told me using a condom doesn't really count as losing your virginity—so, if you're okay with it, can we go bare next time?"