Long one: 1372 words :)     Slight and I mean slight Smut

Warnings: Blood, Death, Abuse

Crowley had gone for a walk in the middle of the night and ended up at the graveyard. He was sitting, well leaning against a grave just soaking in the night. He looked up at the stars and smiled but he snapped his head towards the sound of a beating heart that was heading towards him. You see Crowley was the type of demon who needed blood to sustain himself and it was a quality he disliked about himself but it was necessary.

Crowley hissed under his breath, he recognised the scent of the person, it was his angel, Aziraphale.

"Crowley what are you doing here?" asked the angel who walked up behind the demon

"Just admiring the peace and quiet" answered Crowley who became very aware of the angels heartbeat and the smell of blood about him.

Crowley turned to face the angel with a concerned look on his face.

"You're bleeding"

"How did you...? Yes I cut myself with my letter opener, How did you know?"

"I can....smell it" mumbled Crowley

"I'm sorry my dear?" questioned Aziraphale

"What do you know about Oni demons?"

"Oni demons are powerful demons that need to consume the blood of others to survive, why do you ask?"

Crowley turned away from the angel and sighed

"You are an Oni Demon?"

Crowley sighed again, the angel knew and he would most likely hate him.

Aziraphale walked up to Crowley and put his hand on the demons shoulder and turned him around, the demon didn't look at the angel. However the angel put his hand on the demons cheek, the demon looked up at his angel.

"You're ashamed?" realised Aziraphale

"I never wanted you to know, I figured to think me a monster, I don't think I could take that"

"You are not a monster Crowley, you do what you have to to survive, you are still a..."

The demon glared at the angel.

"A good person"

The demon sighed but his attention was diverted to a heartbeat across the graveyard.

"Someone's here"

"How do you know?"

The demon looked back at the angel and said "The same way I knew you were here, I can hear their heart beating"

"Lets go Crowley" said Aziraphale who took the demons hand and pulled him away.

Crowley disengaged his senses from the other heartbeat and followed the angel, which was quite the task.

Aziraphale kept an eye on Crowley the entire walk back to the bookshop as they past many people on the street all of which Crowley was having a hard time ignoring.

They walked inside and Crowley leaned against one of the bookshelves.

"Are you alright dear?" asked the angel who pulled down the blinds on the doors.

"Yeah, walking past all those people was hard"

"How long has it been since you fed?"

"Two days or so"

"How long before you cant...?"

"Can't what Angel? Control myself?"

"Crowley I am merely worried about you"

"I'll be fine angel" said Crowley who walked out

Crowley had gotten angry for no reason, he was finding it harder to contain his hunger and it was coming out with his emotions which was a bad thing, it meant he was on the verge of losing control and he wanted to be very far away from his angel when he really did lose it.

Crowley made it home without hurting anybody and slammed his door which made a mirror on the wall near the door fall to the ground and break.

"Great 7 years bad luck, just what I need" he said walking right past it and towards his sofa.

Crowley fell onto his sofa face first and fell asleep. When he awoke he could hear the hearts of every one of his neighbours, there was approximately 30 in the building at that point. 

Crowley didn't want to hurt any of them and so he walked into a room in his flat that he had miracled to be soundproof even to his enhanced senses, It was a panic room of sorts.

Crowley had been in there meditating when the door opened and he sped up and pulled the person in and pushed them against the wall flaring his fangs at them and his eyes became more red than yellow, Crowley had lost all control by this point and was nothing but pure hunger, which is why he didn't realise it was his angel.

"Crowley it's me"

Crowley snapped out of his hunger and let the angel go, walking away and leaning against the adjacent wall. He was finding it very hard not to rip into his throat.

"Crowley its alright, I'm here"

"That's the problem" whispered Crowley who sped up and once again pushed the angel against the wall "Do you have any idea how hard it is to keep my control around you, you're the one tempting me angel....just by existing"

Crowley sped out of the flat and onto the street, he wandered around the dark alleys of London before he heard it, the sound of a man beating up a woman. Crowley pushed the man off the woman and she ran away whilst Crowley held the man against the brick wall.

"Who the fuck do ya think you are?" asked the man

"Does beating up woman make you feel powerful or are you just sick?"

"You're insane bruv"

"No...I'm hungry"

Crowley bit into the mans neck and took what he needed. 

Aziraphale had followed Crowley and bumped into the woman who ran away from the man Crowley had attacked, she explained to him what happened and then continued running. Aziraphale followed where the women had come from and found Crowley standing before a man who was on the ground, dead.

"Crowley?"

Crowley snapped his attention towards the angel still in a hunger induced rage. He sped up to the angel and stood mere inches from his face. The angel noticed that there was drips of blood coming from the demons mouth. Crowley stared at Aziraphale but somehow he knew that he didn't want to hurt him and so he, once again, sped off into the night.

Aziraphale took one look at the dead man but then quickly went after the demon once again. When he finally caught up to him he was kneeling on the roof of some building stalking a couple across the street.

"Crowley?" he said walking up to him slowly

The demon stood up and snapped his head towards the familiar voice.

"Its alright, I'm here"

The demon didn't move he let the man he was too lost to recognise walk closer to him. Aziraphale walked right up to Crowley and put his hand on the demons cheek which seemed to snap him out of his hunger, if only temporarily.

"Angel I...."

"It's okay, I'm here"

"I killed that man" realised Crowley

"I know"

"I'm sorry, I'm so sorry" said Crowley who had tears threatening to fall.

"Shh, Its okay" said the angel who leaned his forehead against the demons and put his hand round the back of the demons head.

"I can't control it, even now"

"Use me my dear"

"What?" asked the demon who looked into the angel's eyes

"You don't want to hurt anyone else, then use me"

"Angel no, absolutely not, I won't hurt you like that Angel"

Aziraphale placed his hand on the demons cheek and said "If it helps you I am quite happy to do it"

"Angel I..."

"Its quite alright and yes I am quite sure" said the angel who undid his bowtie and unbuttoned the top button of his shirt.

The demon sighed, he didn't want to hurt the only person who didn't see him as a monster.

The demon leaned his head on the angels and unwillingly let him into his own head. The Angel could hear the demons thoughts, he was scared of losing him.

"You won't lose me my dear and you are no monster. You are my demon, my Crowley" said the angel who pulled the demon in and kissed him.

The demon took control of the kiss and began trailing kisses down the angels jaw and neck, he hesitated when he reached the neck.

"I'm yours Crowley"

Crowley took a deep breath and bit into the angel's neck and drank the blood which was surprisingly good, Crowley had expected it to burn him, being angel blood an all.

After about a minute Crowley pulled away and looked at his angel.

"Better my dear?"

"Yes, Thank you"

"Anytime and I mean that my love"

"My love?"

"Yes, I love you Crowley, I believe I have for quite some time and I..."

Crowley stopped him with a kiss.

"I love you too Angel"

Let me know if you want a second part :)