Akira noticed his wife's mother, Natsu, has an overly erotic body. He wanted to see that bewitching body just once. The raw changing of his mother-in-law that he peeked at because his curiosity couldn't be contained was more than he imagined. The corrective underwear that she wore because she was worried about middle-aged weight gain was stretched to its limit, and her forcibly stuffed huge breasts were about to burst. Akira couldn't stop the gulping sound in his throat when he glimpsed the fully ripe female body in the mirror.
