In a mixed-bathing hot spring, a married woman with her husband tries to hide underwater cunnilingus from him. When she is licked, sucked, and gently bitten on her private parts, she initially resists, but after a few minutes, she arches her back, pushes out her genitals, and begs for more cunnilingus. Completely forgetting her husband's presence, she indulges in the immediate pleasure. Overwhelmed by the intense cunnilingus, leading to a breakdown of reason, the married woman is ensnared by the hedonistic demon, sinking deeper into the pleasure of the penis...