Unfortunately, it's hard to know when it's the best time to tell your human friend that you're not human. And it's hard to gauge how they might react. But Kun-woo knows now and he's perfectly fine with it so... problem solved? Crisis averted? His no longer human friend is perfectly okay with him also not being human. It's an odd thing, to think of Kun-woo as anything other than perfectly human. It might actually take him longer to come to terms with this new information about Kun-woo then it seems Kun-woo will about him.

Jaeseok grins and nudges Kun-woo with his hip. "My sweet little Kun-woo, falling into bed with some vampire! I never thought I'd see the day."