Initially, the Shiname couple had a harmonious relationship, but after several years, their bond had completely cooled. They hadn't engaged in marital relations for over a year, and Yuna, the wife, was living a dull daily life. Then, out of the blue, her husband invited her on a hot spring trip... Wanting to spice up her monotonous life, Yuna readily agreed. On the day of the trip, Yuna headed to the inn with faint hopes, but she had no idea that what her husband had in mind was far more audacious and lewd than she could have imagined…
