Azusa, his son's wife, is kind, beautiful, and hardworking, and her father-in-law, who lives with him, is constantly looking after her. She is in the prime of her life, and her voluptuous, slim-waisted body is fresh and juicy, and the father-in-law casts lewd glances at her every day. Even so, it is truly pathetic and pathetic that his son is unable to satisfy such a devoted and faithful wife in the sex life... Feeling sorry for his son's wife, the father-in-law can no longer resist and does the forbidden act...!