While Sakura is unconscious after overheating in the bath, her father-in-law discovers the naked body beneath her towel and begins licking her breasts and pussy in a simulated sleep-assault scenario. His relentless cunnilingus turns pleasure in her dreams into an obsession. Even after waking, she no longer resists; she becomes completely obedient, begs to bathe with him, and repeatedly has sex while soaked, finally asking him to lick her entire body again that night.