Polite, gentle, and endowed with huge breasts—mother-in-law Shiho. She has a harmonious relationship with her husband, but sex has been rare and she's sexually frustrated. One day she is attacked by her son-in-law, who had been fascinated by her lewd breasts! “It's your fault my wife no longer excites me, mother-in-law!” he says, then exposes her breasts, squeezes them, licks them, and proceeds to raw sex with a creampie! Despite the forceful sex, she experiences the pleasure of a vaginal orgasm she hasn't felt in a long time. Shiho gradually becomes addicted to the secret sex with her son
