SPRD-644 - Better than my wife... A dangerous night alone with my mother-in-law

The husband (Hiroyuki Miyazaki) welcomes his mother-in-law 'Mari' (Mari Yonezaki), who came to town out of concern for his heavily pregnant wife. While bathing, Mari, wearing hot pants, washes his body, making his heart race. After seeing him masturbate, Mari says, 'If an old woman like me is okay, I'll help you,' and they immediately have sex and kiss. 69 position, fingering, and oral ejaculation. They kiss in the hallway and have sex in the bathroom. A delivery man (Tomohiro Abe) who spied on them steals a kiss from Mari in the room and sucks her breasts. He tears her pantyhose, brings her to climax with cunnilingus and fingering, and they have sex. Missionary, bent-over position, standing doggy style, face-to-face cowgirl, reverse cowgirl, 'shumoku' position, missionary, and 'matsuba kuzushi' position before ejaculating. While the wife is at the hospital, the husband embraces Mari in the kitchen. Kissing, breast fondling, cunnilingus, and immediate sex. He hits her from behind while standing, then hurriedly covers up when his wife returns. At night, Mari masturbates in the kitchen. After the birth, while the wife is at the hospital, they kiss on the sofa, suck breasts, and perform cunnilingus and fingering. They have sex and do 69. He pounds her hard in cowgirl, rear-seated, and doggy-style positions. Unaware that his wife has returned, he ejaculates on her chest in the missionary position. 'Mother-in-law, you're the best.'

In this installment, the daughter is full-term pregnant, so the mother-in-law comes over to help out. When the husband is masturbating in the bedroom, the mother-in-law catches him and says, 'If an old woman like me is okay, I'll help you,' and proceeds to perform oral sex on him. Afterward, the husband continues his affair with her behind his wife's back, but there's an inserted subplot where a delivery boy spies on them and tries to blackmail her. It would have been more natural to skip that and instead include scenes of the wife performing handjobs or oral sex to contrast with the mother-in-law. The baby is born safely, but while the wife is at the hospital, the husband and mother-in-law are having sex when the wife returns and catches them in the act. They are too engrossed to notice, and the wife quietly leaves. The premise is solid, and if they cut out the delivery boy subplot, this kind of story could definitely work again in the future.