Tsubasa Miyuki, a 52-year-old female company president and wife of 28 years, runs a florist shop and leads a refined life immersed in traditional Japanese hobbies like tea ceremony and koto, embodying the grace of a true Yamato nadeshiko. Surrounded by flowers during work and indulging in quiet pastimes on her days off, she once held strict moral values regarding fidelity. However, after turning fifty, she began questioning her long-held beliefs, realizing they might have been outdated, and suspecting that she'd simply never had the opportunity before. With five years having passed since her last sexual encounter with her husband, her pent-up desires led her to obsessively indulge in masturbation. Her self-pleasure technique is strikingly elegant—her fingers moving with the smooth, delicate precision of someone playing the koto—an exquisite sight to behold. After experiencing her first affair, she openly admits, "Honestly, I feel like I've been missing out all these years (laugh)." Witness the alluring transformation of this beautiful, middle-aged married woman as she dives headfirst into the pleasures of infidelity.