Kwon Dorin is a top student and is studying for a master's degree in journalism at Korea University;
Her brother is a bad student and was specially recruited to enter the school as an entertainer;
Quan Duolin is an actor, from "National First Love" to "National Actor";
Her brother is a Repper, from the leader of a boy band to a top singer and producer;
Quan Duolin is aloof and forced to do so by her brother;
Her brother is also aloof and pretends to be cool;
Quan Duolin is an innocent girl who has only been in love once since she was a child;
Her brother is a playboy, and the girls he has dated and had affairs with together can drink up the water of the Han River;
Don't get me wrong, this is not a brother-sister story, the male protagonist is a college sweetheart from Chengdu University who has incredible skills in flirting with girls.