Sunghoon was a very possessive vampire, more so if anyone got near his property, it didn't end well from them, in this case, his property was you

ever since he saw you he needed you, it was like his entire world just revolved around lust when he was with you and he wanted to mark you as his

you wouldn't agree whenever he'd persuade you and today was no different

"It would be anyone's honor to become mine and I'm even choosing you myself" he says in front of the counter