A target of yearning and envy since her junior high school years, 20-year-old Rena is blessed with a great best friend and boyfriend that have stuck by her side nearly her whole life. With all of them in the same college together and things with her boyfriend going stronger than ever, Rena couldn't be happier?but one day, the girl Rena believed to be her best friend gives her the first taste of what looks to be a long lesson in betrayal.