A hardworking older brother. An unemployed younger brother. A kind, busty sister-in-law, Hana Haruna. One day, while the sister-in-law was cleaning her younger brother's room, she found a large number of embarrassing secretly taken images of her doing housework saved on the younger brother's PC... The sister-in-law was stunned and frozen. Then the unemployed younger brother came home from the employment office... Carefully choosing her words so as not to hurt him, the sister-in-law asked him about the videos. The unemployed younger brother then broke down in tears, buried his face in the ample breasts of his kind sister-in-law, and begged for forgiveness...!