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?

Kyoya finds himself on edge as his and Erika's second real Christmas together approaches--what wild demands will Erika make of him this time?! Meanwhile, Kamiya proposes a big Christmas shindig with the whole gang, and to everyone's shock, Kyoya agrees. But it appears there's something else on his mind...