High school girl Erika may be on Kyoya's leash, but she's determined to break free and unleash his heart! Fed up with her friends' constant bragging about their boyfriends, high school student Erika Shinohara decides to make up a relationship of her own. When her lie starts unraveling at the seams, her charming schoolmate Kyoya Sata agrees to be her pretend boyfriend, seemingly saving her reputation. She won't get off that easy, however, as she soon discovers her white knight is actually a blackhearted prince! Now Erika must be at his beck and call or risk her lie being exposed. But is Kyoya really as blackhearted as he seems? To convince her friends that she's not hopelessly single, Erika sneaks a pic of a random hot guy to claim as her boyfriend. But when that hot guy turns out to be Kyoya Sata, a student at her school, she finds herself scrambling to cover her tracks. Desperate, she explains her predicament to Kyoya, and he agrees to help her out--for a price! Now Erika can't help but wonder if she's bitten off more than she can chew.