The unfortunate teenager, high school student Ling Qi Sa, was forced to work hard for his wasteful parents. However, his parents, who borrowed 150 million yen from loan sharks, ran away and used Ling Qi Sa to pay off the debt. In order to repay the huge debt and escape the loan sharks, Ling Qi Sa chose to abduct a girl. But by mistake, he became the hero who rescued the girl from the kidnappers. The deeply moved girl revealed her identity. It turned out that she was the eldest daughter of the rich man's family, Michiin Nagi. Nagi not only helped Ling Qi Sa repay the debt of 150 million yen, but also hired him to be the housekeeper of Michiin's family. In this way, the bond between Michiin Nagi, the eldest daughter of the otaku, and Ling Qi Sa began.