My unbelievably beautiful girlfriend and I have been in a secret sexual relationship for over a year. She works daily as an office lady at a major company in central Tokyo. This time, we finally realized our first hot spring getaway together. After casually strolling around the station area of the hot spring town and enjoying a relaxing foot bath in a cozy atmosphere, we headed to our inn. Back at the inn, we immediately went to a private open-air bath for couples. Her movements as she removed her yukata were incredibly sexy, and once immersed in the hot spring, she revealed an even more sensual, alluring figure. Carried by the moment, we started making out passionately, growing heated in every sense, before moving to our room. In the quiet space of the inn, her moans echoed around us. The sex here felt completely different from our usual encounters in Tokyo hotels—her proud big tits and big ass swayed dynamically, making for an intensely erotic experience. Having sex in a new environment like this opened the door to discovering exciting new sides of her.