Feeling the emptiness of her sex life with her selfish and overbearing husband, Mirai is a wife who has recently become a daily routine to comfort her own body. Mirai, who has become unsatisfactory with her own fingers, secretly buys a vibrator on mail order ... It has been found out by her father-in-law, Kozo! "Can you teach me how to use this, Mirai-san?" Mirai, who was frustrated and aching, was made to cum over and over again by Kozo's forcible torture.
