A secret hot spring trip with my boss's wife. Ever since I first met her—she grew up in Osaka—I couldn't help but feel drawn to her. But she's my superior's spouse... someone I shouldn't desire. Still, we decided to travel together. On the train, I made her perform fellatio, and she sucked me off meticulously with her clinging, skillful tongue. Even while walking along mountain trails, she exposed her lewdness by pissing openly. The risk of getting caught by my boss only heightened the tension and pleasure. This forbidden journey becomes the turning point that deepens our relationship.