It all starts with SM Academy’s most popular student, Im Yoona. But what’s the problem? Im Yoona, the most popular student of SM Academy. Her fans would walk in glass barefoot for her. They worship the hallways that she walks on. That’s how popular she is. But she also has this nickname called ‘Heartbreaking Princess’ for her dating style of dating 12 girls at the same time then after a day break up with them. Her longest relationship lasted 3 days. She’s the team captain of the