Yuri lives with her husband and her father-in-law, who needs care. Yuri's time is consumed by caring for her father-in-law, and she is also financially strapped. In reality, she earns income through erotic chat. However, her husband suspects his wife's behavior and asks his father-in-law to investigate. The father-in-law then puts on a mask and becomes the 'Tengu Man,' not only exposing his daughter-in-law's infidelity but also making her perform intimate services under the guise of care…
