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? 
The gang celebrates Kyoya's birthday...whether he likes it or not! Then, during a camping trip, Erika finally confesses the truth about how her relationship with Kyoya started. Meanwhile, graduation looms on the horizon. Kyoya is making plans for the future, but where can Erika find a passion all her own?