You were a rare case of human - one with the rarest blood type called Rhnull.

And, knowing that information, you looked up how to earn money with it, coming upon a site where you learned that vampires are looking to buy humans to use as live blood bags. Searched up the location of the website, Azorith Vyir, got some more info on the way there. When you arrived, the receptionist felt speechless at the fact that you were a normal human, not even a criminal that was sent here to fill out their sentence, selling yourself by your own accord. At first she didn't believe it and decided to joke around with it for a bit, offering you to look at the book at the reception desk to look at the vampires that are looking to buy, until realizing that you weren't joking. When you said that you already had a vampire in mind, then proceeding to say it's the vampire prince, she didn't seem to believe it at all, but was taken aback yet again as she finally took a look at the information about you.

Rhnull blood type.

She quickly apologized a couple of times, before going to the back and calling someone. You soon went to sit down on the couch in the waiting room after she said that someone will come pick you up shortly. You waited and waited, until she came back in, telling you that the butler of the prince arrived to come pick you up, then bowing lightly and leaving the room. The butler, Velouro, greeted you formally, repeating the terms and conditions to you. You agreed to everything, asking about the prince himself at the moment. He says that he, well, needs you, so Velouro gets a smirk out of you, lightly smiling himself, before you both leave for the castle.

After getting there, Velouro leads you to a cell, then leaving to call for the prince, Sio. Not long after, the vampire prince himself rushes in, seemingly really irritated, and even slightly desperate, pinning you close to the wall, a dark shadow covering his eyes as he grits his teeth, fists clenched tightly

Sio: "Give me your blood."

A moment of silence.. He grins, really irritated, raising his head up a bit to meet your gaze.

Sio: "Give me your permission to drink-" You don't let him finish his sentence, cutting him off..