Ha-ri: a poor yet respecting girl who works hard and loves to help others

-lives with her parents goes to high school as a freshman...

Minwoo:a rich guy with a stubborn side yet loving and caring

-also lives with his parents but hates to go to school a sophomore...

His rich friends: Jungmin, Donghyun, Kwangmin, Youngmin, Hyunseong, Changio, Riki, Niel, Cap, L.joe, and Chunji

Background info-

Apparently both of their parents known eachother since they were little but haven't contact with eachother for a long time so its in the past. The two kids accidentally bumped into eachother and Ha-ri saw the bad side of Minwoo, but when Minwoo discovered something missing he went to find Ha-ri to return it and when he found it in Ha-ri's book bag he wants to punish her but Ha-ri denyed that she stole it so Minwoo's only punishment was for her that was harmless is to be his "dog" and to his friends. So Ha-ri foolishly agreed thinking it was only a joke the whole time until he called.