Author's Notes: This is the first chapter of a non-commission story I'm going to write between commissions. If you like my work please considering getting in contact for a commission.

Harry was not having a good summer. With the death of Cedric and the return of Voldemort, not to mention the smear campaign the Daily Prophet was engaging in against both himself and Dumbledore, the-boy-who-lived felt as if his entire world was crashing down around him. Don't misunderstand, he was used to media criticism. But never in his life had he ever felt he deserved it before, even if the stuff written in the papers was all complete lies. How could he not? He'd let the one person who'd been nice to him during the first half of the triwizard tournament die because of his weakness.

Even the thought of his 15th birthday hadn't made him feel better, despite how special a birthday it's meant to be. Nothing was able to get him out of this funk he'd been in since escaping the graveyard and only just being saved from Barty Crouch Jr. Still, he hoped he would have fun on his 15th, maybe it would take his mind off of just how utterly terrible he was feeling. Hell, he'd even done all his summer homework already and redrafted it twice just to have something to do on the worst days. If Snape didn't give him an 'O' for this essay he would have definitive proof the man was downgrading him without due cause, that ought to get him in trouble.

Still as Harry James Potter woke up on the day of his 15th birthday, July 31st, he didn't feel any less depressed than he had any other day since the incident. But he did feel...differently. His skin felt tighter over his muscle, his eyes felt like they were seeing in high definition compared to what they had been previously and he was bursting with energy. This wasn't normal even when he wasn't depressed, Harry wasn't a morning person. Bounding out of bed, Harry walked up to his mirror and his eyes widened at what he saw before him.

The young wizard was taller, much taller. He went from a relatively average for his age 5'6'' to positively dominating 5'11'. His muscles were bigger and leaner all over his body, giving him a definition nobody in his class had. Looking down, Harry was shocked to find his penis, which previously had been respectable but not massive as most were, was now BIG. Flaccid at 7.5 inches long and 5 inches of girth, not to mention his balls were practically swollen compared to what they were. Finally, his eyes seemed to be fixed for lack of better words. Taking off his glasses, Harry was shocked to find his sight no worse and in fact better than with them on. The teen began to panic a bit and did the one thing he could think to do.

"MUM! Can you come in here for a minute?!"

Mere moments before, Lily Potter was down the hall in the master bedroom of Potter Manor getting ready for the day herself. Being the head of House Potter until her son came of age, Lily had taken on all the responsibilities of house head since her husband's death. Still, she had made great progress in the thirteen and a half years since her husband passed, getting laws changed in the Wizengamot and increasing the wealth of House Potter through both muggle and wizard means. She was even working on convincing Her Majesty Queen Elizabeth II to intervene in the wizarding world to totally reinvent the Ministry of Magic to make it more modern. She was thinking separation of powers, swearing loyalty to the monarch, the full nine yards.

Ambitions aside, Lily had other worries on her mind at the moment. Specifically, worries regarding her son Harry. Ever since the death of the poor Diggery boy and the return of Voldemort, she could tell her son wasn't coping well. It didn't surprise her, he was a teenager after all death shouldn't be something he should have to witness. But life was often cruel, as it had been when it took her husband, his father, from them and now she was left to handle the challenges of raising a child alone. Challenges that he knew in their case would be especially challenging starting today.

"MUM! Can you come in here for a minute?!"

Hearing her son call out for her, Lily looked herself in her vanity mirror and let out a deep breath. Getting up from her vanity table and wrapping her violet silk robe around her, Lily made her way out of her room to confront her son. Walking down the hall she prepared herself for what was coming. The redheaded mother knew what was likely to happen today, the same as what had happened to her all those years ago. She would have to face the fact that she and Harry were different and she would have to guide him in the months and years to come.

Coming up to Harry's door, she took one more calm breath before entering. Stepping inside, she gasped as she was greeted with a significantly different Harry to the teenage boy she had wished goodnight mere hours ago. Taller, stronger looking and lacking glasses as he turned around to face her. The first thing she noticed was how confused and frightened he looked and her first instinct was to go and comfort him. Immediately after however, she was hit with an oppressive aura she quickly registered as magical in nature. Her heart began to beat faster as her breath was caught in her throat, her pupils dilated and instinctively she bit her lip as a wave of desire passed through her.

'This is bad, he's far stronger than I ever was,' Lily thought to herself as she tried to regain her composer.

"M-Mum, what's happening to me," Harry stuttered out, staring at his mother helplessly as she just stood there eyes wide at him.

"Harry...you're releasing too much magic...you need to reign it in sweetheart," Lily forced herself to say between breaths, still not able to fully control her instinctive reaction to his new power.

Harry looked at her confused for a moment, but when he paid attention he realised he could feel his magic far more tanglably than he had before. Taking a deep breath, Harry allowed himself a moment to calm down. As he did so, he felt his magic actively recede into his body. Within seconds Lily took a deep breath and leaned herself up against her bedroom wall, visibly sweating from what she's just experienced

"Are you okay?" Harry asked, concerned.

"Yes sweetheart I'm fine, I just need a moment to catch my breath," Lily answered, smiling reassuringly to her son.

"What's happening to me, why do I look so...so DIFFERENT?!" Harry looked desperate for answers, so Lily sighed and gestured to his bed.

"Sit, I think we need to talk,"

Harry sat down on the bed, still not a piece of clothing on him. Lily had noticed but chose not to say anything as not to cause him further embarrassment, Harry seemingly had failed to realise it all together. A beat of silence existed between the two of them as Lily tried and failed several times to find the right words to say, but stopping short just before starting. It took a minute, but eventually she was able to get something out that thought sounded right.

"Harry, have I ever told you how your father and I first became friends and eventually started dating?" Lily asked, side eyeing her son.

"Not much, just that you were dealing with some stuff in sixth year and he helped you through it which eventually led to you saying yes to a date before the end of sixth year," Harry responded, getting a nod from his mother.

"That's right, but the truth is my problems didn't begin in sixth year though I certainly had far more secondary problems by then," Lily began, memories of an old greasy haired friend popping into her memory. "In truth my problems began at the end of fourth year, on my fifteenth birthday."

"Mum, are you saying…"

"That I went through the same thing you just have, yes," she confirmed. "Harry, you and I are special because...I'm a succubus."

"WHAT?!"

"Harry I need you to remain calm for me," Lily said firmly, planting her arms on her son's shoulders. "At first I didn't know what had happened to me, I was scared and unlike you I had nobody to tell me the truth. I did my research, spent months experimenting with my new abilities. It would only during a night in Hogwarts' Library's forbidden section that I realised I...was a demon of lust and procreation."

"B...But that can't be true, I've read and succubi. They're red skinned, have horns and tails, they feed on life force energy given off during...during sex," Harry ranted, his face turning red at the last part.

"I'll prove it to you then."

Lily stood from the bed and staring down at her son, her body began to change. Her skin turned crimson, her body grew taller, her muscles and breasts bigger as a thin, poker shaped tail sprouted from just above her bottom and horns sprouted from her forehead. Her pupils became slits and her emerald eyes gained a shine to them that previously didn't exist. Staring down at her son, Lily merely gave a sympathetic smile.

"I know this is a lot to take in, but it's the truth," Lily admitted. "Truth be told I only found out when I was fifteen and to this day I've never told Petunia or my parents, whom I've come to terms with the fact may not be my real parents at all."

"S...So this is what you were dealing with that dad helped you with?" Harry asked, getting another nod.

"Correct, I was largely able to control my urges through the fourth and fifth year. But as I grew so did my hunger, until eventually I couldn't take it anymore. I sought out your father for one simple reason, by that point he'd shagged half the upper class women in the school and they were all adamant he was a good lover so I shared the truth with him and he helped me and through that, we became friends."

Lily adopted a nostalgic smile.

"I had expected him to go running off to tell everyone who'd listen he'd finally scored with Lily Evans, but he never did. He took our arrangement surprisingly seriously and I grew to respect him for that, until eventually I found myself attracted to him, both for his kind heart that I hadn't seen before and well...the girls he'd shagged weren't exaggerating. He fed me very well."

"So that means that...I'm an Incubus?" Harry asked, trying his best to ignore the slowly growing erection he was getting as she continued to talk.

"Or half-Incubus, I'm not quite sure how demon genetics work If I'm honest," Lily answered. "All I do know is that you're far more powerful than I ever was, which is a cause for concern in and of itself."

"Why? Is something going to happen to me?"

"Harry dear, it already has happened and will continue to happen. Your urges will grow, your powers will increase and you'll have to learn to control both before you go back to school lest you turn every pubscent woman around you into a drooling mess and be recognised for what you truly are, which would likely end bad for us both,"

Lily's face turned dark as she said this, quickly joined by Harry's as he realised what she meant.

"All demons are marked as dark creatures," Harry said solemnly.

"Exactly, so you must hide your true nature," Lily replied, elaborating on her son's point.

Harry looked down at his lap as it all really began to sink in. He was a demon, or at least part-demon, and he would have to hide this from everyone for the rest of his life. He couldn't even risk telling his friends about this, lest they reveal it to the wrong person and end up ruining his life in the process. This on top of being hunted by Voldemort and being smeared by the media was far more than any 15 year old should have to put up with. Why? Why did this weird shit always have to happen to him? It was fair!

The despair and depression that hate plagued Harry for weeks now began to change into white hot anger, all the pain and sadness being pushed out of the-boy-who-lived's body in the farm of a thick, oppressive wave of demonic magic. The raven-haired youth could feel the anger course through him as he felt his muscles expand and his eyesight sharpen to an even greater degree. He felt motion in his tailbone and a foreign pain in his forehead. It all became too much with Harry letting out a frustrated scream which in fact came out as a roar.

Harry jumped up from the bed and stared at his mother with piercing eyes, unsure of what had come over him. He was just so angry, frustrated and annoyed by this plethora of information he'd been hit with. Lily starred her son down, having witnessed his first transformation into his demon form. She was proud, but at the same time she knew tensions were running high and now of all times she needed to regain control of the situation.

"Harry, you need to calm yourself down," Lily said in what she had hoped would be a commanding tone, though it didn't quite come out that way as every fiber of her being was telling her to submit to the more powerful demonic entity in front of her.

"Calm down? You drop all this on me when you know I've been struggling since that night in the graveyard and you want me to CALM DOWN?!" Harry roared, the boy quickly losing control of his magic as it filled the room, pressing down on Lily and making it hard for her to even move.

"Sweetheart please...I-I know this isn't easy for you, but I c-can help you," Lily promised, hoping to placate him. Needless to say it wasn't working.

"I DON'T WANT HELP! FOR ONCE I JUST WANT SOME TIME WHERE I CAN BE NORMAL, WITHOUT SOMEONE TRYING TO KILL ME OR KEEPING SECRETS FOR ME!"

Harry began slowly inching towards his mother who quite instinctively bowed her head and backed up away from her son. It was a sign of complete submission on her part, the attempts to make her child see sense not working in the slightest. She kept backing up until the demonic woman was back up against the wall. With only inches separating her face from her child, his face scrunched with anger as he looked her square in the eye.

"H-Harry p-please, I-I'm sorry i-if I've upset y-you," Lily stuttered out, fearful of the alpha demon standing over here as she felt like she could be torn to pieces at any moment.

"I'm far more than upset, mum," Harry growled out, his anger less explosive and more white hot at this point. All his rage was aimed squarely at her and she could feel the full weight of his magic beating down on her. Lily wanted to curl up into a ball and stop existing under its oppression.

Harry glared down at his mother, the boy was practically having an out of body experience at this point. He was not in control in the slightest, his demonic rage having completely overtaken his rational mind. But weirdest of all, amongst all the rage and anger, Harry felt a huge amount of arousal too. His still naked cock was now rock hard as he hovered over Lily and the anger plus the arousal pushed him to do the only thing his emotions could figure to do. The teenage demon grabbed his mother by the arms, pinning them above her head and kissed her with a force previously unknown to him.

Lily's eyes widened and she tried to scream, wriggling to get free so that she might push him off her but all that achieved was giving Harry's now pointed tongue entrance to her mouth to twirl around her own fighting for dominance. The younger of the two quickly established himself as the one setting the pace however, forcing her to submit to him as his kiss overwhelmed her. The kiss lasted for several moments before Harry pulled away, both mother and son breathing heavily as they stared into each other's shining emerald, demonic eyes.

"Harry, this is wrong. I'm your mother," Lily said quietly, trying her best to look away from her son's burning gaze.

"Say that again when you can make me believe it mum. You're a succubus, you need stuff like this to survive remember?" Harry shot back, his anger still burning hot inside him.

"Sweetheart, we couldn't possibly do...THAT!" Lily protested, more insistent but still far from convincing.

"Really?" Harry asked, nodding as if in agreement. "Okay. But tell me first. If you really don't want this, then why…"

With one hand Harry proceeded to roughly pull open Lily's already barely hanging on night gown, the silk being a few sizes too small in her succubus form. Without a moment's hesitation, Harry ran his fingers through the folds of Lily's pussy. Without thinking the red headed mother released a quiet moan at her child's ministrations.

"...are you so fucking wet?"

Lily bit her ruby coloured bottom lip and tried not to react to her son rubbing her sopping cunt despite the shots of pleasure running through her. She knew what this was, she knew this was not her son in his rational mind. This was all anger and instinct and if it was anyone else she'd have wrestled them off of her and knocked them out by now. But this was her son and not only that, he was far more powerful than she was. In this state even in her succubus form she could do little against him, especially when he was transformed himself.

It was quickly becoming obvious to the young mother that there was little to be done. Harry wasn't going to stop until he blew off some steam and got a hold of himself and she had no way of escaping what was coming. He was right after all, the thought of her son taking her wasn't all that unpleasant to her on the face of it. She was a succubus and it had been a long time since she'd had her needs met, by a man anyway. Bowing her head, Lily stopped resisting and allowed a loud moan to escape her mouth.

"Take me," she said quietly.

"What?" Harry replied, smirking.

"You're a man aren't you? I said take me damn it! Lily shouted, knowing it would press all the right buttons.

Harry snarled at his mother, his demonic instincts taking exception to a weaker being telling him what to do. Grabbing his mother by the arms, he practically threw across the room with Lily landing bent over the edge of the bed. As he did so, he kept a hold of her silk nightgown so as she was pushed towards the bed it ripped from her body revealing her crimson form. Seeing Lily's large, perfectly film, rounded ass thrust out for him Harry marched his way over taking his rock hard cock in hand as he did so. Lining himself up with her soaked twat, Harry began to rub his head along her folds.

"Oh fuck," Lily moans out. "Stop fucking teasing me already, you're getting what you wanted so just fuck me already!"

"Desperate are we?" Harry growled out smugly, a tone previously foreign to the teen. "I want to hear you beg for it."

"As if I would degrade myself to my own spawn," Lily growled back proudly, her own demonic instincts beginning to fully take over now. Harry responded by taking a handful of Lily's hair and roughly yanking her head back to meet his as he leaned over her.

"Beg, or I won't give you what you want. You might have been queen bitch before, but I'm in charge now. Keep that in mind before mouthing off again," Harry threatened, getting a reluctant moan of delight from his mother.

"...please.."

"Please what?!"

"Please, fuck me!"

"Please, fuck me WHAT?!"

"Please fuck me sir! I need it damn you!"

"Well, you asked for it!"

Without a moment's hesitation, Harry slammed himself into Lily with a force previously known to the teen. Letting go of his mother's hair, he palmed her head and slammed it into the mattress as he fucked her with all the force he could muster, his pelvis slapping against his mother's shapely behind. He held her in that position for some time, asserting his dominance of her as a new hierarchy was established within the family. She may be his mother, be he was the alpha now and she would do well to remember that.

Quickly growing sick of that position, Harry forcefully pulled Lily up to her feet while continuing to thrust into her cunt. Wrapping one hand around her throat, he used the other to roughly paw at her sizable breasts. He squeezed her chest and played with her nipples, squeezing until it hurt just a little which to his delight only made Lily moan louder. The teen quickly began to lose himself to the sensations emanating from his cock and let go of his mother's throat and breast. Feeding his hands between her thighs, the black haired teen hoisted Lily up before dropping her back down on his engorged prick. He effortlessly lifted her up and down the length of his shaft, getting it as far into her as he could in order to maximise his domination of her body.

Lily was barely conherant by this point, her first orgasm having come and gone by this point as she was subjected to a very ending torrent of hard hitting stimulation. But despite being hit with orgasm after orgasm she could still feel something more, something greater, bubbling beneath the surface. As her son thrust into her faster and faster, harder and harder, what little rational thought the redhead had left could only focus on that feeling and it frightened her just how explosive that build up would be when it released considering just how hard she was cumming already.

"Ah shit I'm getting close," Harry growled, his cock twitched and throbbing now. "Do you hear that mum? I'm gonna cum in you. This incubus cock is gonna fill you up and fucking breed you, YOU SOW!"

His mother didn't even have the energy to respond as she was forced up and down his cock faster and faster, the build up in her navel getting greater and greater until eventually her boy couldn't last any longer.

"TAKE IT YOU WHORE!" Harry roared, his cock exploding with semen as a wave of pleasure the likes of which he had never felt before rushed through him.

Harry painted his mother's cunt white with his spunk, and as he did so whatever was building up inside his mother snapped and she let out one of the loudest screams of delight she'd ever vocalised in her life. Her eyes rolled into the back of her head and her tongue lolled out of her mouth lewdly as she positively squirted into response to being filled up by her lover's cream. The two held positions for several moments, high on pleasure as their respective climaxes ripped through them for far longer than any human would experience.

Finally, Harry began to come down from his climax and he lifted his mother off his softening cock allowing her to fall unceremoniously onto his bed where she lay in an orgasm induced stupor. The incubus allowed himself a moment to catch his breath before finally sitting himself down on the edge of his bed.

As his senses returned to him, Harry was finally able to take stock of what he had just done. At first he expected to feel terrible or disgusted by what he had done, but in truth those feelings never came. Instead, Harry simply felt relieved and in fact a lot more relaxed with his new situation now he'd gotten the rage out of his system. Looking at his mother, Harry took in just how much of a number he'd done on her despite her being in her succubus form. He still wasn't quite used to her looking like that, but he was sure it'd come with time. It was as he looked upon his mother's current state however that something occurred to Harry, something that would make him feel better than he had in weeks.

"This is a weapon, something I can use against Voldemort," Harry thought to himself, a huge smile spreading across his still crimson face.

Plans began to rush through Harry's head, questions to ask his mother later on and the possibilities of what he could do to turn the tides in his favour. For the first time since he started Hogwarts, things truly felt like they were under his control and it felt nothing if not liberating. But for now he would need to put that aside, as Harry realised something he had missed.

His mother was still passed out and he didn't know how to transform back yet.