This sexual-harassment training story features frequent scenes of Yui resisting and showing distress. College student Yui has always hated her stubborn, bad-tempered grandfather Mitsunori. When he injures his back, she reluctantly agrees to care for him during summer break in exchange for driving-school fees. Furious with her careless treatment and aroused by her now-curvy body, he declares that he will teach her what caregiving really means by forcing her to handle his old cock.