3 years married. Yui, a wife who takes care of her husband who fell ill suddenly. Her brother-in-law, Koji, who has a secret admiration for her Yui, is worried about the future of the two, but he can't do anything about it. One day, when Koji visits as usual, she encounters a scene where Yui is processing her brother's libido. Koji secretly peeks as if fascinated. Furthermore, Yui was alone in her room, comforting herself because of her loneliness that she could not have sex with her husband. Koji can not suppress the lust that springs up inside himself.
