It all started with an accidental kiss when Donghae and Eunhyuk were ten.

Life is hard enough while in your last semester of university, the last thing Eunhyuk needs is some stranger telling him he's the one foretold in the prophecy. 

Donghae happily watches his tiny Chrismtas tree, ready and waiting for Santa to arrive.

An obviously fool proof plan on how to use mistletoe on a certain Lee Donghae, that is just absolutely bound to work. Right?

"It's okay Hyukkie! Renting a whole zoo would've been too much anyways! And writing the wrong date on invitations happens all the time."

Most people said that high school is the best years of your life. Most people didn't have to deal with Lee Donghae. 

"And that's what you're selling your soul for. Eternal damnation once you die to be friends with a demon." Donghae eagerly nods.