AN: I don't own HP.
This story was born from both a tiny plot bunny in my farm and from not finding a single fic on Archive of Our Own that was tagged with both MoD Harry and Vampire Severus Snape.
Also... I've been picturing Adam Driver as a canon, age appropriate Severus Snape. Someone did a fancast video for HP on Youtube and I liked him as Snape. Tall, gangly, unusual nose, dark hair...
Harry saw the instant that Remus scented Snape, in the Shrieking Shack, raising his nose to the cold draft of air. Saw Remus' nose wrinkle and a faint growl left the man's throat. Sirius stiffened next to him and Hermione drew Harry closer towards her, perhaps thinking that whoever had just come through the Willow above them warranted wariness.
Hermione's fingers flexed around her wand and Harry grinned faintly, already knowing who was coming. Past memories flowed through his mind quickly before he shrugged them off, more than just the cold air making him aware. It had been a long while since his third year, only vague recollections making him just as wary as Hermione was. Of course… Hermione and Ron didn't know what he knew, didn't know that Sirius and Remus were innocent of their accusations.
That Sirius himself was innocent. The moment that he had seen Sirius in the flesh tonight, he had had to take a moment, breathing in and out deeply, his knees threatening to give out. Hermione's fingers squeezing his shoulder had drawn him out of it, realizing that this wasn't a dream. That it wasn't a hallucination or a result of one of George or Fred's pranks.
He really was back in his third year, in his 13 year old body, about to see Severus Snape walk in and threaten Sirius and Remus. And interrupt… Harry sighed, feeling the presence of this time's elder wand even here, a few miles from the castle, and twitched. There was something… or someone… The power that by now came easily to him, the power that let him feel...death… sparked with ice, cool flares shooting through his body.
He wondered… If not… Snape came barreling through the wide open doorway a moment later, wand raised, his dark eyes drawn with hate as he took in the situation with ease. And Harry… froze, tilting his head in confusion. Snape was… A sound must have left his throat as Hermione turned to look at him, her eyes wide.
The rumors had been true and Harry snorted, half a minute away from breaking out into laughter that would have sounded hysterical. He side stepped Hermione as Snape threatened Sirius with the dementors kiss, his wand at Sirius' throat, and met Ron's eyes, seeing Scabbers trembling in Ron's hands. Harry scowled and then cleared his throat, sudden but firm.
"Can I hold Scabbers for a moment, please?" Harry questioned, feeling all of his years as Death, without his godfather.
Sirius and Remus' eyes were stuck on him now and Severus was looking between them, his dark eyes flashing. Harry could feel now what he hadn't been able to the first time around, feel the way that Snape's power was tinged with darkness. And he wondered… A fully blooded vampire would have been able to withstand Nagini's venom but… Snape… hadn't looked good before he had gotten attacked by Voldemort's snake.
Those robes hid everything and Harry let out a sound that was half hiss, half curse, and saw Ron nod at him. He reached out and grasped Scabbers or Pettigrew, grabbing him by the scruff of his neck, not that there was much fat on the rat to begin with, and snapped his neck, quick and easy. His power quivered and tensed around him before relaxing at the scent of death. Hermione sucked in a strangled gasp, her face going pale, losing color.
Ron's eyes widened and widened until they rolled back into his head. Harry sighed in slight amusement, seeing the blood sluggishly dripping out of Ron's wound, his pale skin. Harry let Pettigrew's body fall down to the wood floor with a thump and flicked his thumb and index finger towards the rat, seeing the rat turn into a man before his eyes.
Remus and Sirius had gone utterly silent, their eyes wide. Severus looked at him, his eyes seemingly full of hatred, flashing with emotion, and Harry let out a hum, considering for a moment before walking over.
Snape's wrist had gone slack with shock and Harry took that instant to step between him and Sirius, curling his fingers around Snape's. Severus Snape was cold to the touch but Harry didn't feel much of it, his own warm skin matching the man's in a different way. Death and Death's own child. And looked him directly in the eye, matching green to near black, seeing shock written into his mouth, his eyes. Severus' eyes had gone wide, his shoulders curled inward, his arms trembling.
"Potter-"
"Go sit down, Severus," Harry interrupted, pointing to the ratty old bed on the opposite side of the room. "I'll talk to you later."
"Potter, I am a teacher," Severus nearly growled out, his eyes flashing with anger at being spoken to like this. His crooked nose wrinkled with disgust and Harry frowned, inhaling sharply.
"I know. Yet you insist on denying what you are," Harry remarked, his fingers curling tighter around Snape's, entwining them. Severus stared at him, his eyes still wide, his mouth curling into a grimace. "Go sit down."
Severus shivered even through the robes, his eyes darkening not with anger, not with fear, but with… something akin to hesitant obedience. Something in Harry purred, rumbling, as he watched Severus walk over to the bed, his hands trembling. Shadows curled around him as he looked Snape over before turning back to Sirius and Remus, who were both still staring at him.
"What the hell did you just do, Harry?" Remus asked, his voice hoarse.
"Harry, you just…" Hermione trailed off, shock in her voice and yet there was an ounce of...fear in there too. And Harry's heart fell into his stomach at the sound. "You killed… You spoke…"
"Hermione, I'm sorry," Harry started, turning to stare at his best friend. "I hadn't wanted you to see that but… Here. I'll talk to you both later."
He held her gaze, only taking half a minute to dig into her memories and pulling. Gently. Hermione let out a strangled gasp, her eyes widening, before she fell back onto the chair behind her, falling limp with spelled sleep. He felt Snape, Remus and Sirius watch him with wide eyes, feeling the cold difference of Severus' eyes more sharply.
He turned around to finally face his godfather and Remus, taking in both of their appearances. Sirius looked exhausted, pale, thin and half dead but he was alive, his fingers shaking. Remus looked halfway to shifting, the wolf pacing behind the man's eyes, just waiting to get out and rip something to shreds. Preferably something warm and bloody. The full moon was high and rising tonight and Harry sighed at the thought.
"Pettigrew would have gone on to meet Voldemort," Harry finally spoke, quiet and firm, seeing Snape inhale sharply at the words. Sirius stiffened and Remus froze, his arms trembling. "He would have helped Voldemort to regain his human form and in doing so would kick start another war. I don't give a single fuck about him. It's been a long time since I've been really, truly human."
Sirius stared at him, his skin losing even more color. Severus twitched from where he was on the bed, his knuckles white as he gripped the mattress. The potions master still had his wand tight in his grip and Harry eyed him before shaking his head slowly. Severus glared at him but stayed his hand just barely.
The cool breeze that flooded the interior of the Shrieking Shack made him shiver, made Sirius shiver. It didn't look like it affected Remus at all.
"Remus, if you need company during the full moon tonight, let me know," Harry continued, lifting an eyebrow at the man. "And don't say you'll be fine. Sirius, stay here. Let me go deal with the dementors."
"What about him?" Sirius asked, the first one to speak in the silence of Harry's… well, tightly worded suggestions. He jerked a thumb towards Snape, who glared at him.
"Severus, you can either stay here or go back to your office," Harry remarked, pointing back towards the castle. "We are talking about this."
"I am not just leaving them here," Severus retorted, standing up and almost swaying on the spot as Harry released one shield on his power. Death flooded the Shrieking Shack as Harry relaxed, flexing his fingers, rocking back on the heels of his feet and smiled. It wasn't a happy smile, judging by Remus' soft inhale. "He is wanted by the dementors and the law, Potter, and I am not who you think I am."
Harry grinned in challenge, his heart skipping several beats and staying still for half a moment. "Then why are you swaying towards me?"
Severus blinked and swore under his breath, his skin paling to an alarming degree. Alarming even to a vampire and Harry raised an eyebrow, watching as Snape tried to stay standing amidst his almost uncontrollable urge to move towards Harry.
"You are just a teenager," Severus hissed, his mouth opening just far enough that Harry could see a glint of fang. "Why?"
Harry closed his eyes and breathed out, muttering under his breath. "I so do not want to experience puberty again, fuck."
Before the eyes of the three men in the room, he changed, growing tall, broad, healthy, sturdy. His hair grew long, almost touching his shoulders, his eyes darkened, his scar grew fainter, old. By the time his magic stopped, Harry looked 30 years old, not 13. The clothes he had worn before the change were tight on his skin now so he just shrugged and flicked his fingers over himself. Ratty clothes changed into a clean, well fitted shirt that hugged his body and jeans that hugged his hips.
Sirius sucked in a sharp breath at the sight and looked between Remus and Severus, before walking over to stop in front of his godson. Harry looked back at him, slightly feral green eyes peering back at him.
"Padfoot."
Sirius let out a whine at the word and Harry pulled him in, rough and abrupt. Harry's breath hitched and Sirius let out several hiccuping breaths, burrowing even more into those arms.
"It's alright, Sirius," Harry whispered, digging his thumbs into Sirius' hips and smiling when Sirius groaned at the touch. "You're safe. Remus, I need you to take him to the goblins in the morning. They'll keep him safe for the time being."
"Harry… What… What happened to you?" Remus questioned, his eyes wide.
"Lots of things happened," Harry offered, shrugging at the question. "I died, for one. I need to talk to Severus and then I'll shift shape and ride out the night with you."
Remus nodded and then did a double take, raising an eyebrow Harry's way. "Shift shape? You're an animagus?"
"Yeah. Runs in the family, doesn't it?" Harry ran a hand through his hair and turned to look at Severus, who was leaning against the wooden bedframe. "Give me a couple minutes."
Severus stared at the now adult Harry Potter, watching as he walked-no, stalked-over to him, well used muscles flexing in his shoulders, moving gracefully. Potter caught his eyes and held them, curious intent in them, as he passed Sirius and Remus. Power curled around them both, hiding them from view, making everything else fog up.
"Potter, I swear to Merlin-"
"You've been starving yourself," Potter began, coming to a stop two feet away. The wind howled around the Shack, bringing with it cold and the scent of death and the smell of Weasley's blood. Severus shivered and licked his lips before swearing again.
"I am not a…" Severus paused and glared at Potter, who smirked at him. "I am not a vampire. Those are just silly rumors that the students-"
"The students what? A human wouldn't react this way to me, to being around me," Potter offered almost kindly, something flashing in his eyes that told Severus that he didn't like being lied to. Severus turned away from those green eyes, too tired from years of denial to look the truth in the eye. Especially so now that the truth came in the shape and form of Harry Potter, shadows curling around them both. Potter smelled… good, smelled… like blood and heat and life and yet he also smelled like the dirt that came from a grave.
Fingers came around his chin and turned him back, making him look at Potter. Severus let out a strangled, raw sound as the warmth from Potter's fingertips flooded his body.
"Severus, I am not trying to hurt you," Potter said, holding him still, his eyes catching Severus'. "You must know what I am by now."
Severus flinched and tried to move away only for Potter to hold on, his hand tracing downwards to cup his throat. It was a light hold but it still made him shudder, made his cock twitch underneath his robes.
"Death," Severus croaked out, not recognizing his voice, hoarse and low with undisguised want. Want of what, he wasn't sure, but… his throat had gone dry, his stomach curling with hunger.
"Yes. Do you need to feed right now?" Potter asked idly, like they were discussing the weather. Like he wasn't holding Severus by his throat, his thumb rubbing teasing circles into his skin. There was not an ounce of fear in Potter's eyes, no hesitation, no teenage fidgeting, just the calm that came from experience.
"I… No. Potter, I do not-"
Potter stilled his fingers right over his pulse point and stared right at him, his eyes flashing with what might have been anger. "When the final battle came, you were attacked and killed by Nagini. Vampires can withstand poison, even if it's direct from the source. You had been starving yourself."
Severus paled at the words, shivering as Potter flexed his fingers around his throat, his heart beating once or twice before falling silent.
"Now… do you need to feed?"
Severus quivered before deflating. Potter seemed to sense his answer before he brought up his left hand, pushing up his sleeve. A cut appeared on Potter's arm, blood coming to the surface, and Severus licked his lips. Potter's hand pulled back from his throat, leaving a heated mark on it, and stared at him expectantly, blood dripping down onto the wood floor underneath their feet.
Severus sighed and pulled Potter's wrist up to his mouth, looking right into Potter's eyes as he curled his mouth, his fangs, to bleeding skin. Potter just looked right back, his green eyes blowing with what looked and smelled like arousal. His pupils blew as he licked his lips, his breath hitching quietly as Severus drank his fill. And Potter's blood… was like nothing he had ever tasted before, more than just regular blood. It was full of life, hot and rich and Severus groaned as he swallowed it down, licking at the skin, wanting more.
His cock stirred underneath his robes as he drank, sucking down blood like it was water and he had just traveled through the desert.
"Good boy," Potter whispered, laying his other hand on Severus' chest. "Take what you need."
A raw noise left Severus' throat unconsciously as his knees trembled, threatening to buckle at the praise. He sucked in another few mouthfuls and swallowed greedily, taking in just one more gulp before slowly reeling himself in. He licked over the cut finally-not softly as he didn't quite know how to do soft- and pulled back, meeting those green eyes.
"You come to me when you want to drink next," Potter ordered, taking his hand away and curling it around Severus' left hip. "And there will be a next time, is that clear?"
Severus nodded, his throat closing against words that wanted to come out, fighting against himself, against those instincts that said that Death… that Potter knew how to care for his own. That he was Death's property. He was a vampire after all.
Potter waited, patience nearly dripping off him like his blood had a minute or two before. "I need words, Severus."
"Yes, goddamnit," Severus finally retorted, glaring at him. "Yes, I will come to you."
Potter's lips twitched in bemusement. "There's the Severus Snape I know. Go back to the castle and run interference for the night."
"Are you so hellbent on giving your…" Severus hesitated and reconsidered the words he was going to say at Potter's expression. "Giving your godfather a second chance?"
"Sirius Black is innocent," Potter explained, turning to look back at Black. The fog around them slowly dissipated and Potter sighed. "James and Lily changed secret keepers. Pettigrew was the one they chose."
Severus looked down at the body of Pettigrew on the floor and then met Potter's eyes again. The man had killed Pettigrew without even looking at him twice, snapping his neck without hesitation.
"Death."
Potter hummed and dipped his head in a nod. "That would be me, yes. Now get going."
"How do you expect me to 'run interference'?" Severus argued, glaring at him again.
Potter smirked, heated amusement in his eyes, in his voice. "Well.. just use that mouth of yours. I know you're quite good at that."
Severus blinked and watched as Potter turned back to Remus and Sirius, giving him his back. Severus scowled and headed out, feeling young, feeling alive for the first time in years. His scowl deepened as he realized it was due to taking Potter's blood.
"Severus…"
His cloak brushed against his body in the breeze as he stalked off, inhaling deeply, his hands trembling even as he steadied himself for the night ahead.