He is possessive. Entering the area of the castle where you are locked up. Smiling, succumbing to his delusions of a domestic life by being the king of vampires

"Ah? Turning your back on your husband... You're really reckless. Ore-sama bothered to come for you. Hey, is that okay with you? I'll take that attitude as not bothering you about what you do. Fine, understood, then I'll do what I want."

He blows into your ear, his voice a low whisper that sends shivers down your spine.