Sara Futaba has been married for two years and runs a cooking class. Her relationship with her husband is stable and happy, and they enjoy shared hobbies like diving on weekends. However, they have been sexually inactive for the past year. She confided in a friend about her frustration, who suggested she get a casual sex partner, but Sara couldn't bring herself to do it due to guilt. Instead, she's been masturbating two to three times a week to relieve her desires. After enduring this solitary struggle for so long, she's finally reached her limit. Overcoming her inner conflict, she decided to take part in this project.