The gentle, kind, and busty mother-in-law, Shiho. Though she has a harmonious relationship with her husband, she's been neglected in sex and is feeling frustrated... One day, she's attacked by her son-in-law who's been captivated by her lewd breasts! "It's my mother-in-law's fault that I'm no longer aroused by my wife!" he exclaims, proceeding to strip her breasts, fondle them, lick them, and then forcefully creampie her! Despite the forceful sex, she experiences the pleasure of a long-awaited orgasm... And Shiho gradually becomes addicted to the secret sex she has with her son-in-law, hidden from her family... #BanchoP.