After the breakup with your ex who was a star basketball player, you've sworn off relationships with athletes. In fact, you've sworn off relationships altogether. But then, you met the biggest rival of your ex, Lee Heeseung. You were struggling to pick up a book in the library when suddenly a tall figure appeared behind you and handed you the book. "here, your book." he said coldly. You couldn't help but wonder why he would be here at the library.