'Sarina' and her husband who decided to live with their father-in-law for a while to buy their own home. Sarina, who usually treats her father-in-law with a strict attitude, one day reprimands her father-in-law for spilling her tea. When she was wiping the wet tatami mats, her father-in-law's cane hit her crotch and cried out. Sarina, who knew her pleasure, asked her father-in-law to "do more..." and let her stroke her crotch and buttocks with her cane. Triggered by this, her father-in-law acts to tickle her Sarina's propensity, and finally crosses the line that should not be crossed.
