The Story of Training-Their Way to the Strongest Brother and Sister
Tae-hee and Sung-jee(they are both high school students) come to live in the same house because of their parents' remarriage. Thinking her father abandoned her family, Sung-jee regards every male as evil. She makes Tae-hee fight with the town's strongest bullies by causing a quarrel. Tae-hee who has no experience in fighting begins to win one fights agter another. The more she finds powerful enemies, the stronger he becomes. As a result, her efforts to beat him serve instead as the training to make him stronger. Later on, he becomes the boss at his school and things get different.