Yuri was left living alone when her husband had to stay overnight at the hospital. To support her, her daughter and son-in-law decided to move in together. While Yuri expressed gratitude for their kindness, she couldn't suppress a deep, rising impulse within. With her husband absent and her mind increasingly drawn to her son-in-law's strong, masculine body, she told herself it was mere lust—yet the desire welling up from deep inside her became uncontrollable. One day, Yuri asked her son-in-law for a massage, using the opportunity to press her body close against his, whispering sweet, seductive words into his ear. This was no ordinary massage—it was a deliberate trap to seduce him. Unable to restrain her feelings any longer, Yuri made the decision to fully pursue her attraction toward her son-in-law.