High school girl Erika may be on Kyoya's leash, but she's determined to break free and unleash his heart! Fed up with being hopelessly single, high schooler Erika makes up a boyfriend to fit in. When her lies start to unravel, her schoolmate Kyoya offers to be her pretend boyfriend--for a price. With no other choice, Erika finds herself at the mercy of a blackhearted prince! But is Kyoya truly as blackhearted as he seems? Things get rocky for Erika and Kyoya once again when discontent leads to an argument. Erika vents to Terasaki about the fight, only for him to confess to her once more! She manages to smooth things over with Kyoya but doesn't tell him about Terasaki's confession, opting to turn him down on her own. But when Terasaki refuses to accept rejection, his attitude takes a turn for the worse!.