A college student couple on a date at the hot spring was approached, and secretly proposed a mission to one of the girls and the other guy's boyfriend! Have secret sex with each other's lovers during the trip without them knowing! The mission that started with 'holding hands' gradually escalated! Eventually, it became a scene of infidelity right next to their sleeping lover! Even if you suppress your voice, once you're penetrated...you can't hold back anymore! Once you've done it once, you'll want to do it again! Monitor the two of them going crazy with internal ejaculations over 2 days and 3 nights!
