'Sarina' and her husband decided to live with his father temporarily in order to buy their own home. Sarina, who usually took a harsh attitude towards her father-in-law, one day scolded him for spilling tea. As she was wiping the wet tatami mat, her father-in-law's cane accidentally hit her crotch, causing her to let out a sound. Having discovered pleasure, Sarina begged him, "Do more...", and had him stroke her crotch and buttocks with the cane. This became the start of her father-in-law teasing her sexual fetish, ultimately crossing a line that should not be crossed.
