Ai has been married for two years and she lives with her husband's parents. Ai's husband is always focused on work, so he is superficial in sex ” and they haven't had a child for two years. Ai noticed that the love between her husband's parents was very close, they often made love to each other and she became jealous because of that. Deciding to seduce her father-in-law by confiding in her sufferings, the father-in-law soon had a craving for his beloved daughter-in-law. From that moment on he fucked Ai twice a day and was determined to help his daughter-in-law get pregnant so he could have a grandchild to carry.