Please Refund This Imprint!

When Jeong-in heard that his long time crush was getting married, he ended up having a one-night stand in anger to forget his broken heart. But he remember having sex with a handsome man. What’s this strange pattern on his tongue? The man ‘Hwa’ appears again to Jeong-in, who is confused, and makes a bombshell announcement. He says that he is a vampire and that he has imprinted on Jeong-in. More than anything… “You will continue to feel excited because of the imprint. So… Won’t you date me until you find a way to release it?”