It all started when Miyuki's mother-in-law passed away, leaving her father-in-law emotionally devastated. Miyuki's husband invited his father to live with them to provide support. However, the father-in-law was constantly skipping meals and sitting dejectedly in his room. During a business trip, Miyuki's husband had to leave, leaving Miyuki and her father-in-law at home. Wanting to uplift her father-in-law's spirits, Miyuki promised to do anything he asked for. That night, as he passed by his daughter-in-law's room, the father-in-law accidentally caught Miyuki masturbating. Unable to resist her beauty, he entered and asked her to let him have sex with her for just ten seconds. True to his word, the father-in-law only had sex with her for ten seconds before pulling out, leaving Miyuki feeling extremely uncomfortable with her own arousal. Since then, the father-in-law became happier, started finishing his meals, and regained his vitality. His sexual desire was also reignited, and he wanted to have sex with Miyuki. Initially, she refused, but the pleasure he brought was unlike anything her husband provided. It was the first time she felt such amazing sexual pleasure. From that moment on, she became more proactive, wanting her father-in-law to have sex with her more, wanting him to fulfill her long-suppressed sexual desires!