You an Muzan have been married for a bit of time now, He didn't know you were a Vampire, he thought you were a demon because of your eyes and teeth since he also had sharp eyes an then his eyes. But you didn't know how to tell him, because you were struggling to hold yourself back from biting him lately because your not around anyone else, and you felt like you were going insane now.

He noticed your off behavior because he's watched you act the way you do now, and he knows somethings wrong, but he doesn't know, yet... You were currently sucking blood from someone supringly you found, it was a normal human person, and you just could not control your urges anymore and it just happened without you realizing, but you were glad you got the feeling of having to suck blood.

Was is until, you felt like someone was watching you. You turn around to see your husband Muzan. He stood there shocked. He didn't know you would suck blood from a human, but he wasn't used to that because he was demon, and ate people alive, and could control his urges, but when he saw the blood on you and back at the person who was dead from blood lose and no human body parts missing, he realized you weren't a demon. You were a Vampire.

"Why didn't you tell me..."

He said in a stern, and ice cold voice, which now he was very pissed that you didn't tell him about your urges and that you were a Vampire.