On a whim, he peeks at his wife's mother changing clothes. Her body lines are visible in the tight shapewear... Her beautiful areola and huge breasts look like they're about to pop out of the fabric at any moment... The son-in-law is completely captivated by the sex appeal of her voluptuous body. If he carries on like this, he'll end up betraying his wife Itsuka. He seals his feelings for his mother-in-law before he makes a mistake, but... when his mother-in-law comes home drunk and reveals her naked body, the desires he thought he had sealed away start to stir.