My brother has been living a depraved life without work or gambling addiction in his one-room apartment. Seeing this, my sister-in-law and her husband, who live in a neighboring town, decided to help clean up his messy apartment. My brother-in-law is hardworking and responsible while my sister-in-law is beautiful, diligent, and virtuous. As they continue to come over to help clean, my perverted eyes can't resist ogling at the alluring sight of my innocent sister-in-law bending over during her chores, exposing her enticing panty lines and plump derriere. One day, after weeks of lustful gazes...

仕事もせずギャンブル狂いで一人暮らしのアパートで堕落した生活を送る兄。そんな兄の事を見かねて隣町に住む弟夫婦がゴミだらけのアパートを片付けに来てくれる事になった。真面目で働き者の弟と、綺麗好きで貞淑な弟嫁。連日片付け作業に来てくれるたびに眼前で揺れるうっすらとパンティラインの透けた弟嫁の前傾作業での桃尻ぷりけつ隆起に、無職の堕落兄貴は不謹慎ながらも卑猥な視線を遠慮なく注ぎ続けていた。ある日遂に…！