My actor and actresses :'))

Bobby and Ra-in both belong to rich family in Seoul. Both going to the same school but dislike each other. Bobby is a playboy in their school and dumb lot of girls in his life also going out with them. Meanwhile Ra-in is cool girl which always act like nothing happen aroung her and even for her Playboy like Bobby never exist in her life. After finish their school, they never met each other until something happen to bobby's father company and need help from Ra-in's father. But they found a shortcut to the problem and arrange "Marriage contract" between Bobby and Ra-in.
What happen to them? Well , I'm going to tell you the whole storyy ^^