KSBJ-314 - Sensitive wife, Shiraishi Momo, repeatedly subjected to sexual abuse and permitted internal penetration by her father-in-law during a long period of separation.

Her husband is away on a long-term assignment, leaving his father-in-law and Momo alone. Momo, feeling lonely, attempts to alleviate her feelings through masturbation, but is observed by her father-in-law. The next day, the father-in-law attacks Momo under the guise of sympathy. Initially, Momo resists, but becomes enveloped in a strange sensation of fulfillment. And she begins to desire her father-in-law herself…