Sora's husband was away on a business trip for five days. On her first night alone in her room, her father-in-law knocked on her door, bringing a stern "command": "You must remain abstinent until your husband returns." Sora found the request absurd, yet she couldn't refuse under her father-in-law's authoritative and intense gaze. The torment and repression of abstinence accumulated little by little over the five days, and her father-in-law, in his own way, gradually eroded her reason, ultimately causing her to completely succumb to the trap he had set for herself.