Yn is Mei's sister that went to a different school. Until now, that is. She doesn't like it too much at first because Mei spends most of her time with her friends, but then she meets them, and things start to get better. Until Mei and Yn get their pandas, boys start to cause trouble, and she develops a big fat crush on one of her closest friends. How will she get out of these situations? Read to find out!