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?

Graduation has finally arrived, leaving Erika wondering if she’s done anything at all in the past three years but be yanked around on Kyoya’s leash. But can an entire high school career really be summed up in a single ceremony? Plus, Erika and Kyoya’s future is revealed—from their time dating long-distance between Tokyo and Kyoto to their first days living under the same roof to...wedding bells?! The oddball love story that started with a little white lie might just find its happy ending after all.