Chapter Text
It had been a while since they had burned the Moriarty residence. Since then, it had been undeniable that the three grew closer as a family, despite the fact that they were not blood related. He learned quite lately that the twins would be classified as demons, which was considered as the lowest of beings, while he was a pure breed vampire, which was considered the highest in the ranking, along with his wealth and his name, he would be considered the most lucky bastard to walk the streets. Living among humans was never a task, since masking their features would be considered easy, despite the energy it consumes. Though he would be considered strange, since he was already 14 going on 15, and not once had he taken a sip of blood from a human, nor did he ever intend to, even if the urge grew stronger for every year he lives. Blood is too messy for him, so meat had worked well for him. But ever since the incident with his biological brother William and his William, the scent of his blood had been marked in his head.
He remembers watching Louis bandage the wound, but a very small gap had somehow allowed some of its scent to escape and a small intrusive thought of his was telling him to taste it, but he knew better than to do so, considering the situation the poor boy was in. Since then, he would try to avoid the boy every time he gets a wound to prevent himself from acting impulsively. It turned out that he had to avoid him a lot, since the other doesn't know about this thing called self-preservation.
The day had been long, so he had already washed up and went to his bed, lying on his back as he stares into nothing. He was thinking back on the day, trying to remember anything important that he will have to write for future reference, but ultimately, his mind went back to the blond demon, realizing that William was acting nearly as strange as he is. The other had been glaring holes in his back with his big red eyes, and he seemed to be much more awkward the past few weeks. He started feeling bad, but his thoughts were halted when a light knock echoes over the room. Only few people would dare to disturb at this time, so he, of course, knew who it was. He walks over to open the door, to reveal the little demon, smiling at him.
"Hello, nii-san."
"Hello, Will. What brought you here this late?"
"I apologize. But I have been bothered by something, and it involves you"
"Oh? What is it about, then?"
"It's just that I noticed that you have been avoiding me as of lately. Do you no longer like me?"
The question was straightforward, that it really caught him by shock. It took him a while to think of what to say, and William was waiting patiently. Everything died on his throat as the only thing he could say was:
"You know that I like you more than I like myself"
He answered with a chuckle. The other sits in one of the nearby couches and removes his night robe.
"So what is making you avoid me then?"
The other asks once again. He was fiddling with his fingers and he won't even look at him. He sounded so upset, and it sincerely pains him that he was the cause of it.
"Just... Try to have a bit of self-preservation"
"Excuse me?" William asked, his head tilted with confusion.
They both stayed silent before William finally looks at him, he looks at his recently wounded thumb and back at him with his eyes wide open. It seems like he did get it.
"Oh..." The other seems to be surprised for some reason.
"Yes. I apologize for worrying you"
"No, no, it's fine." The conversation halted for a short while, before William stood up from the couch and walked to his bed where he was sitting in. They stared at each other for a while, before William said:
"Why not you have some?" The certainty in his eyes was truly concerning him.
"William, we are both very much aware of what would happen if I consume your blood, yes?" He asked in shock. Apparently, the vampire will take ownership towards the demon's body, while the demon will have the vampire's soul for him to keep. It honestly doesn't bother him much, but he still wants the younger to still have a sense of freedom. He won't be feeling that once he is chained to him.
"I am aware. But you want this as well, don't you?"
The young boy unwraps the bandage of his thumb and pressed on it, the pressure was just enough to open it again and make a bit of his blood trickle down.
"William" he says sternly.
"Nii-san"
The other bends over and brings his small hand to caress his face, his pricked thumb was smearing blood all over his lips. It was a challenge to keep his mouth shut, not when the blood was so tempting. William poke his thumb in, allowing the droplets to drip directly inside his mouth. It was hard to admit that it wasn't bad, it was delicious, addicting even. He had always heard that blood from an innocent human child was best, but perhaps a sin stained demon child worked best for him.
'What the hell am I thinking, he's a child for god's sake'
He tries to keep his sinful thoughts at bay, afraid of what would happen if he strays further. It doesn't help, unfortunately. Not when the other was so insistent.
"It wasn't that bad, isn't it?" The other teased him with a smirk. Seeing that the brat was enjoying this, he had lost all his reasons to deny him any longer of what he wants. He led the other to sit on him, so he doesn't have to awkwardly bend in front of him.
"Are you sure you won't regret this, William?"
the boy smiles as he unbuttons his collar and loosens his tie, to reveal a small, smooth neck. He leans his head sideways, and whispers
"Yes" He couldn't help but submit, not when the other was more than willing to do it. He looks at the other to watch his expression as he gently swept away the blond locks of the other, and licks the skin slowly, earning a tiny gasp from the other.
He then tentatively sunk his fangs in, and the smaller one started shaking, one hand was in his hair while the other was grasping on his clothes like a lifeline. The room was silent, except for the crackles of the fire and the breaths and gasps one of them would release from time to time.
"Good boy" The boy whispers to him as he pulls him closer, his breaths and heartbeat was growing faster and heavier for each suck he takes. After a while, he finally decided to stop, considering that this was both their first time, and he wants to avoid overworking or potentially harm the other. He tried to pull away, but the other kept a tight grip around him, almost as if he'd pass out if he separated from him.
He looked up to look at the eyes of the other, and finds them glowing a bright red. They were staring at each other, and an unfamiliar feeling was pooling at his chest.
"Nii-san" the other calls him breathlessly,
"Hm?" he licks the excess blood that was being released from the wound and covered it with the spare handkerchief that he always had on his person.
"Let's stay like this for now" William says as he slowly loosens his grip. He doesn't know what to say, not when they just finished doing all that. He went completely limp after a few minutes, a sign that the other did pass out after all. He positioned him comfortably on his bed to clean up and bandage the wound that he inflicted. He decided that they will have to speak about this the next morning, just make sure that William still wants to continue this.