Marina has been married to Sadao for four years and lives with her father-in-law, Atsuo. Marina appears bright and cheerful, seemingly happy, but she harbors a secret. Half a year ago, she was forcibly raped by her father-in-law, Atsuo, and since then, the twisted physical relationship has continued. After sending her beloved husband off to work with a smiling face, the in-law's training of his beautiful daughter-in-law begins. 'Father-in-law, please forgive me,' she says, but contrary to her words, Marina's private parts are dripping with love juices...
