After moving in with her father-in-law, Miki Sunohara initially felt uneasy. However, as her husband continued to treat her kindly, she began to think positively: "Fulfilling my duty might not be so bad, especially if it means securing an inheritance." Life settled into a routine—she rarely encountered her father-in-law and grew accustomed to household chores. Everything proceeded smoothly—until one day, she accidentally entered a room he had strictly forbidden her to go into. Moments later, her father-in-law approached from behind, seized her, and the real ordeal began.