After losing her husband, widow Chika has been sincerely grateful to her neighbor, Shimada, and has grown close to him. She believed she would always cherish her late husband's memory and never seek a new romance. However, Shimada's true intention was to possess Chika's pure and fresh body. One day, right in front of her husband's memorial portrait, Shimada forcefully takes her. Experiencing intimacy with another man for the first time, Chika unexpectedly feels intense pleasure, and her body begins to crave a man other than her late husband. Night after night, she becomes obsessed, drenching her panties with desire. This shocking transformation deeply shakes her heart.