Strange coincidence

Louise Henderson was a normal college student goaling to become an scietist and lawyer...meanwhile her sister Mica has an fan meeting to attend to see her idol!!! coincidentally Louise was in charge of her sister until on the day of the fan meeting Michelle(the idol) was running to an shop secretly bumping to Louise, Louise was rude and sophisticated that made Michelle impressed little did they know theyw ere going to be classmates for a whole year!! what will happen between the two with different goals and lifestyle?