"Ahh... I'm connected to you! I don't want to let you go!!" Unfulfilled lust seeks penis. The first and last hot spring trip for a man and woman addicted to sex. In the open-air bath, their hot bodies entangled like wild beasts, their penises thrusting so hard in the bathtub that they wear out! A fierce extramarital love that savors the last happiness as if to cut off an unforgivable relationship!