Professor Potter (Ch. 1 - Convincing Harry) (Patreon)

A big thank you to Luis for their story idea submission and generous support! This story is for you.

Disclaimer: The characters in this universe start Hogwarts at the age of 15, making Iris and her friends 18 or older.

Harry, wearing a loose white shirt and black trousers, busied himself in the kitchen, preparing breakfast for the two of them. The sun shone brightly outside, casting warm rays onto the wooden floorboards. A gentle breeze rustled the curtains, causing them to sway gently back and forth. Aside from the soft whispers of the wind and the clinking of cutlery against plates, the silence of the empty house settled over the atmosphere like a comfortable blanket.

Inhaling deeply, Harry closed his eyes and let out a long sigh.

After winning the war against Voldemort, Harry had decided to take things slow and become a member of the Department of Mysteries instead of an Auror like most expected. He was done with fighting and wanted to live a quiet, peaceful life. However, it seemed fate had other plans.

During a routine experiment, one of Harry's colleagues tripped and fell into him as he was carefully pouring Time Sand into a basin. Startled, Harry accidentally spilled some of the precious substance onto himself, which immediately reacted with his powerful core. Within moments, Harry found himself transported to another world.

This new world looked eerily similar to his own, but it clearly lacked the ruin and destruction he had become so used to after the war. After quickly checking the date, it seemed that he had been sent back in time by a few years. It made sense, Harry had thought, that triggering such a temporally aligned substance such as Time Sand might send him through time. That was what they were researching after all. It was only when he started investigating further that he discovered the truth: this was not his past; rather, it was an entirely different universe altogether.

The first thing Harry did upon realising this fact was seek out information regarding his counterpart - the Harry Potter who lived in this alternate reality. To his surprise, he learned that the Boy Who Lived never existed in this timeline. Instead, there was a Girl Who Lived: Iris Potter. Curious, Harry sought her out at the Dursleys' house, where he found her living with her abusive muggle relatives.

When Iris answered the door, Harry was taken aback by her resemblance to his late mother, Lily. She was thin, short, and her eyes were a similar shade of green to his own. Her face was framed by wild, untamed hair that was a deep shade of red. The most striking feature, however, was the lightning bolt-shaped scar above her left eyebrow.

She had been fourteen at the time, yet she had no idea about magic or her magical heritage. It was only a few days later that Harry learned the reason behind her ignorance. In this universe, witches and wizards started school at the age of fifteen, and Iris had yet to receive her letter of acceptance to Hogwarts.

Harry had been shocked to learn that she had been living with the Dursleys for so long without any knowledge of her true identity, and he had immediately taken it upon himself to help her. After a quick meeting with the Goblins at Gringotts, who swore secrecy for a bit of gold, Harry had managed to claim ownership over 12 Grimmauld Place and guardianship of Iris as a blood relative. From then on, he had dedicated himself to teaching her everything he knew about magic. Well, at least as much as he could while she wasn't at Hogwarts. That time had gone to hunting down Voldemort's Horcruxes (at least the ones he could easily get to), reading in the Black Library and sulking.

Now, four years later, Iris was a confident and skilled witch, and she had grown into a beautiful young woman. Harry couldn't help but feel a sense of pride every time he looked at her. She was intelligent, brave, and eager to learn about magic. Despite facing numerous challenges, she had quickly adapted and become proficient in spell casting. She was also a quick learner, and Harry had no doubt that she would become a powerful witch in the future.

However, there was only one problem. Over the past few days, ever since Iris had turned eighteen, he had found her increasingly difficult to ignore. He was sure it was just a coincidence, but he couldn't help but notice the way she suddenly looked at him. Her eyes lingered on him for a moment too long, and she had started to act differently around him. She was more affectionate, and she had started to touch him more often. It was driving him mad, and he was ashamed of the feelings that had started to stir within him.

He tried to shake off these thoughts, reminding himself that they weren't technically related by blood. They were from different universes, after all. But that line of reasoning didn't exactly do anything to help the war he was having with his own emotions. He was her guardian, her mentor, and he had no right to feel this way about her. He was sure that she didn't feel the same way, and he didn't want to ruin their relationship by acting on his feelings.

Speaking of Iris, she chose that moment to make her entrance.

"Morning, Daddy," she greeted him with a bright smile, her emerald eyes sparkling with mischief.

Harry felt his heart skip a beat when he heard her call him that. It was a new habit she had picked up ever since her birthday, and he couldn't help but think it was intentional.

"Morning, Iris," he replied, trying to keep his voice steady.

She was wearing one of his old t-shirts and a pair of pink panties. Harry tried not to stare, but it was difficult. The t-shirt was far too big for her, and it barely covered her body. He could see the outline of her nipples through the fabric, and he could tell that she wasn't wearing a bra.

Harry quickly looked away, trying to compose himself and the growing bulge in his trousers. He cleared his throat and focused on their breakfast, trying to ignore the way Iris was watching him with a knowing glint in her eyes.

As Harry served them their food, Iris moved the conversation to the vacant spot for the Defence Against the Dark Arts post at Hogwarts. Ever since Lupin's untimely exit at the end of last semester, the school had yet to find a replacement professor, and Iris thought that Harry would do exceptionally well, having witnessed his teaching skills and knowledge firsthand.

"Come on, Dad, you know you'd be great at it. You're already an accomplished wizard, and you've got loads of experience. Besides, it'll give us more time together."

Harry sighed and shook his head. "I don't know, Iris. I'm not sure if I'm ready to be reminded of all my old friends again. Not after what happened during the war."

Iris looked at him with understanding eyes, but Harry wasn't fooled. He knew that she had already set her mind on convincing him. "Please? For me," she pleaded, giving him her best puppy-dog eyes. As she spoke, she subconsciously pressed her large breasts together, making her nipples and the swell of her breasts even more prominent under the thin material of the oversized t-shirt.

Harry swallowed hard, trying to ignore the growing bulge in his trousers. "I'll think about it," he finally said, knowing full well that he wouldn't be able to resist her if she kept looking at him like that.

But Iris wasn't convinced. "Daddy, please," she repeated, her voice taking on a whiny, yet seductive tone. She pouted and put her hands on her hips, causing her t-shirt to rise higher above her belly button, revealing a few inches of creamy white skin. "I'll do anything," she added, emphasising the word 'anything' in a way that made Harry's mind go straight to the gutter.

Harry cursed silently, feeling his resolve crumbling beneath her gaze. The boner he had been trying so hard to control was suddenly straining painfully against the buttons of his trousers. He quickly looked away, trying to distract himself by looking at the time.

"Oh, look at the time!" He blurted out, hoping to change the subject as soon as possible. "You should get changed before we leave for the Quidditch World Cup. We can't afford to miss our Portkey."

Iris stuck out her bottom lip in disappointment, but didn't argue. "Okay, fine," she agreed reluctantly, getting up from her seat. Harry breathed a sigh of relief, grateful that the distraction had worked. However, as Iris turned around, she flashed him a teasing grin over her shoulder, letting him catch a glimpse of her thong and her tight ass as she sashayed towards the stairs.

Harry groaned and leaned back in his chair, rubbing his temples with his fingers. He was in trouble, and he knew it.

...

Half an hour later, Iris returned, dressed in a white linen blouse and a pair of tight-fitting pants. Her hair was styled neatly, and she wore minimal makeup, just enough to highlight her natural beauty. When she walked down the staircase, Harry couldn't take his eyes off her. She looked effortlessly stunning, and he found himself struggling to maintain eye contact without staring.

"Better?" She asked, posing dramatically with her hand on her hip.

"Yes, much better," Harry agreed, his voice a little hoarse. Iris giggled and winked at him, enjoying the effect she had on him. Harry shook his head and cleared his throat, trying to push the distracting images out of his mind. "We should probably leave now. The Portkey leaves in five minutes," he reminded her, trying to refocus on the task at hand.

"Alright, let's go then," Iris agreed, grabbing her bag and following him towards the door. Once outside, Iris stepped in close, allowing him to slink his arm around her waist. Harry felt her soft curves pressing against him, and he couldn't help but notice the way her body fit perfectly against his. He inhaled deeply, taking in her intoxicating perfume as he apparated them to the International Portkey Distribution Center.

Once there, it wasn't long before they were shown to their Portkey, and whisked away to the Quidditch World Cup. Upon arriving, they set up their tent and headed out to meet Iris' friends and their family.

Harry had to admit that he was a little nervous. This was his first time socialising since he had arrived in this new universe, other than talking with Iris. He had hidden himself away at Grimmauld Place, scared of meeting this world's version of his loved ones who had died in his own timeline. But Iris had insisted that he come along, saying that it would be good for him to get some fresh air and interact with other people.

As they approached the gathering, Iris led him towards a group of girls who greeted her warmly. Harry recognised them instantly as Susan Bones, Hannah Abbott, and Luna Lovegood. Despite his original reservations, Harry couldn't help but brighten up at the sight of his old friends. They were all alive and well, and it was a relief to see them happy and carefree.

"Hey, Iris!" Susan called out, waving at her. "Who's this hunk you've got with you?" She asked, looking at Harry with a mischievous grin.

Susan was a short, busty girl with long, red hair cascading down her back. She was wearing a tight-fitting blouse that accentuated her ample cleavage, and a pair of short denim shorts that showed off her thick thighs and plump butt. Harry couldn't help but stare at her chest, admiring the way her breasts bounced gently as she walked towards them.

"This is my dad, Harry Black," Iris introduced him, grinning proudly. Harry couldn't help but feel a pang of happiness as she said this. Iris had started calling him 'dad' ever since they met, since she lacked a father figure of her own, but it was one thing for her to call him that privately, and another entirely for her to introduce him publicly as such.

"Nice to meet you, sir," Susan said, extending her hand politely. "I'm Susan Bones. Nice to finally meet you in person."

Harry took it and shook it firmly, noticing how soft and delicate her skin was compared to his rough, calloused hands. "Likewise," Harry replied, smiling warmly.

"And this is Hannah Abbott," Iris continued, gesturing towards a tall, slender girl with long, blonde hair. She was wearing a loose, flowing dress that accentuated her thin waist and wide hips. Harry couldn't help but stare at her, admiring the way her curves filled out the dress. He couldn't remember her being this attractive in his own universe.

"Hi, Harry," Hannah greeted him, giving him a friendly smile. "It's nice to finally meet you. Iris has told us so much about you!"

"Oh? All good things, I hope," Harry joked, chuckling nervously.

"Of course! You're her hero, after all," Hannah replied, rolling her eyes playfully.

"Speaking of which, Iris never told us you were this hot," Susan added, fanning herself with her hand flirtatiously. "You could have warned us." Harry laughed, feeling his cheeks heat up at the compliment.

"And this is Luna Lovegood," Iris finished, gesturing towards a tall, willowy girl with long, silver hair. She was wearing a flowing, white dress that made her look like a fairy princess. Harry couldn't help but stare at her, admiring the way her hair shimmered in the sunlight. It was a wonder what a good set of friends could do for a person's health and self-esteem.

"Hello, Mr. Black," Luna greeted him, smiling enigmatically. Her voice was soft and melodic, like the sound of chimes in the wind. "Iris has told us so much about you. It is clear that she loves you very much."

Out of the corner of his eye Harry saw Iris blush and look away, hiding her face with her hand.

"Thank you, Luna. And please, call me Harry," Harry corrected her, smiling warmly at her. He had always liked Luna, and it was nice to finally meet the counterpart of his old friend in this new universe.

The four of them walked together through the campsite, making their way towards Susan's tent where their parents were gathered. The weather was warm and sunny, and the atmosphere was festive, with colourful tents and laughter all around. Harry could sense the excitement in the air as everyone prepared for the Quidditch World Cup Final.

As they approached the tent, Harry noticed that there were several women gathered around a table, chatting and laughing.

One of them stood out to him immediately: Susan's aunt, Amelia Bones. She was a tall, curvaceous woman with long, red hair and piercing blue eyes. Her most striking feature, however, was her large, round breasts, which were barely contained by the tight blouse she was wearing. He was certain that these puppies could kill a man if not handled properly. Harry couldn't help but stare at them, admiring the way they jiggled as she turned around at the sound of their approach.

Next to her was what Harry assumed to be Hannah's mother. She was a tall, slender woman with long, blonde hair and piercing blue eyes. She had a statuesque figure, with perfect posture and graceful movements. But it was her ass that caught Harry's attention. It was firm and round, with just enough jiggle to make it interesting. It looked perfectly fit for spanking.

Lastly, there was a woman who Harry assumed to be Luna's mother. She was a tall, elegant woman with long, silver hair and striking green eyes. She had a calm and serene aura, which made her stand out among the group. Harry couldn't help but feel drawn to her, despite the fact that they had never met before.

Iris led them over to the group, introducing Harry to each of the mothers in turn.

Amelia Bones was the first to greet him, extending her hand towards him with a friendly smile. Harry couldn't help but notice the way her cleavage bounced when she initiated the handshake, nearly knocking him off balance.

Hannah's mother, Abigail Abbot, was the next to greet him. She looked at him with a warm smile, her eyes sparkling with curiosity. Harry couldn't help but notice the way her eyes trailed up and down his body, lingering on his broad shoulders and muscular chest. He felt a blush rise to his cheeks as she leaned in to give him a hug, pressing her large, soft breasts into his chest.

Pandora Lovegood, Luna's mother, was the last one to greet him. As she stepped forward, she slowly licked her lips, causing Harry's gaze to follow the movement unconsciously. Her lips were full and plump, with a natural pink hue that seemed almost too inviting. Harry swallowed hard, trying to push the distracting thoughts out of his mind.

After exchanging pleasantries, a Butterbeer was thrust into Harry's hand, and he was quickly pulled into a conversation with the mothers. Meanwhile, Iris and her friends went off to explore the campsite, leaving him to fend for himself with the single women.

As the four friends finally found themselves alone, Susan turned to Iris with a knowing grin. "So, sis, how come you never mentioned that your dad was such a hunk?" She asked, winking at her playfully.

Iris rolled her eyes, blushing slightly at her friends's words.

Hannah giggled, nodding her head in agreement. "Yeah, seriously, Iris. You're so lucky to be living with a guy like him. He's hot!"

Susan snickered, nudging Iris with her elbow. "I know, right? And it's not like he's even your real dad. I bet you could totally get him into bed if you wanted to."

Luna nodded sagely, adding her own opinion to the mix. "I wouldn't be surprised if Iris has already attempted to seduce him," she added simply.

Iris's face turned bright red, and she playfully punched Luna in the arm. "Shut up, Luna! I haven't!" She protested, trying to hide her embarrassment. This wasn't how their meetings usually went.

Susan raised an eyebrow, looking at Iris with a mischievous grin. "Really? Not even once?" She asked, waggling her eyebrows suggestively.

Hannah shrugged, rolling her eyes. "Come on, Iris. There's no point in denying it. We all know that Luna's bloodline is known for their Seer blood. If anyone would know about this kind of thing, it would be her."

Iris's face flushed an even deeper shade of red, and she crossed her arms defensively. If Luna was a Seer, Iris thought, then she likely wouldn't be spending her time making prophecies such as this.

"So, how big is he?" Susan asked, holding up her hands to indicate a size. "I bet he's at least eight inches." She licked her lips at the thought.

Hannah shook her head, laughing. "No way. I bet he's more like ten."

Luna looked thoughtful for a moment, then held up her hands to indicate her own estimate. "I would say he's closer to twelve inches," she said confidently.

Iris gulped, taking in the wide gap between her friend's palms. Was this really the size of the monster she had secretly been dreaming about? The thought almost made her shiver with excitement.

Suddenly, Iris realised that she needed to re-double her efforts to convince Harry to apply for the position of Defence Against the Dark Arts professor.

...

The Quidditch World Cup Final was everything Harry remembered it to be. The atmosphere was electric, with the crowd cheering and chanting as the two teams battled it out on the field. The game was intense, with both teams giving it their all, and the excitement was palpable in the air.

As Viktor Krum finally caught the Snitch, the crowd erupted into cheers and applause. Harry couldn't help but feel a sense of nostalgia as he watched the celebrations unfold. It was a reminder of the good times he had experienced in his own universe, and it was a welcome change from the darkness and despair that had plagued his life for so long.

After the game, the group stumbled back to their tents, drunk on Butterbeer and giddy from the excitement of the match. Harry was feeling a little tipsy, and he couldn't help but notice the way the mothers were looking at him. They were all smiling and laughing, and he couldn't help but feel a little self-conscious under their gaze.

But it was Iris who caught his attention the most. She was looking at him with a strange expression on her face, and Harry couldn't quite put his finger on what it was. It was a mixture of admiration, desire, and something else he couldn't quite place. She was clearly influenced by the alcohol, just like him.

Eventually, the group split up, with Harry and Iris heading back to their tent. Once inside, Harry collapsed into the armchair he had conjured earlier, letting out a sigh of relief as he closed his eyes and leaned back.

Iris, on the other hand, was still buzzing with energy. She paced around the tent, her mind racing with excitement. Harry watched her as she moved, admiring the way her hips swayed as she walked. He couldn't help but feel a stirring in his loins as he watched her, and he couldn't help but wonder what was going on in her mind.

Finally, Iris stopped pacing and turned to face him. She looked at him with a serious expression on her face, and Harry couldn't help but feel a little nervous under her gaze.

"Daddy," she began, her voice soft and melodic.

Harry's cock twitched involuntarily at the word, and he felt a surge of heat rush through his body.

"Yes, Iris?" He asked, his voice steady despite the turmoil in his mind.

To Harry, Iris looked beautiful in that moment. Her hair cascaded down her shoulders in wild waves, framing her delicate features perfectly. Her emerald green eyes sparkled with determination, and her lips parted slightly as she took a deep breath. Her skin glowed softly in the dim light of the tent, making her look ethereal and untouchable. Harry could see every curve of her figure outlined beneath her clothes, and he couldn't help but stare at her form.

He knew he shouldn't be having these thoughts about her, but the alcohol seemed to have dulled his senses, allowing him to let go of some of his inhibitions.

"Have you been thinking about my suggestion?" Iris asked, her voice barely above a whisper, her eyes pleading. "You know, about applying for the Defence Against the Dark Arts position?"

Harry groaned inwardly. He had hoped that Iris had forgotten about that conversation, but apparently not. "Now's not the time, Iris. I'm drunk, and we should probably get some sleep. Tomorrow's a long day, after all."

Iris nodded, understanding his reluctance. But she wasn't ready to give up yet.

She stepped forward, closing the distance between them. Harry swallowed hard as she approached, feeling his heart race in his chest.

Before he knew it, Iris was straddling his lap. Harry's breath caught in his throat as he felt her soft curves pressing against him, and he couldn't help but feel a surge of desire rush through his body.

"Please, Daddy," Iris pleaded, her voice low and sultry. "It would mean so much to me. You're the best teacher I've ever had, and I know you'll be amazing at it. Please, just consider it. For me, please."

Harry felt a shiver run down his spine as he felt Iris' body press against his own. It was as if she was trying to melt into him, her curves moulding to his as she ground her hips against his. Harry couldn't help but let out a moan as he felt her heat radiating through her thin clothes, and he couldn't help but wonder if she was doing it on purpose.

Harry's cock twitched again, this time harder than before. The blood was rushing to his groin, and he could feel himself growing stiff as Iris continued to grind subtly against him. If he didn't do something soon, she was bound to notice the growing bulge in his trousers.

"Alright, alright," Harry relented, giving in to Iris' request, anything to get her off of him. "Fine, I'll apply for the job. Happy now?"

Iris' face lit up as soon as Harry agreed, and she threw her arms around his neck, kissing him on the cheek.

"Thank you, thank you, thank you!" She exclaimed, jumping up and down in his lap.

Harry's cock was rock-hard now, and there was no hiding it from Iris. His trousers were stretched taut over his erection, and with every bounce Iris made on his lap, his cock would brush tantalisingly against her core. He tried to shift her a little bit, but her arms were firmly around his neck, her soft curves pressed into him.

Suddenly, Iris looked down at Harry's crotch, and her eyes widened in surprise. She gasped when she saw the size of his manhood, and Harry couldn't help but blush as he felt her gaze on him.

"Oh my God, she wasn't kidding," Iris whispered to herself, her voice filled with awe. "That thing is massive."

Harry gulped nervously, unsure of how to react. He wanted to say something, but words failed him as he felt Iris' hands reach down to cup the length of his erection through his trousers.

"Iris, what are you doing?" Harry asked, his voice barely above a whisper.

Iris looked up at him with a mischievous grin on her face. "Just getting a better look, Daddy," she replied, her voice dripping with seduction.

Without warning, Iris slipped down from Harry's lap and dropped to her knees in front of him. With deft fingers, she began undoing the buttons of his trousers, freeing his monster cock from its confines.

As Iris undid the last button, Harry's cock sprang free, nearly hitting her in the face. Harry groaned as he felt Iris' soft hands wrap around his thick shaft, stroking him gently as she looked up at him with a devilish glint in her eye.

"Iris, stop," Harry pleaded, knowing full well that he didn't want her to stop.

But Iris ignored him, leaning in closer to take a closer look at his monstrous tool. She licked her lips hungrily, staring at the engorged head of his cock with wide eyes. She hesitantly extended her tongue, grazing the tip of his cock with the very tip of her tongue.

"So big, just like Luna predicted," Iris mused to herself, her voice barely above a whisper.

With one hand still gripping the base of his cock, Iris leaned in even closer, letting her other hand wander across his thighs until she found his balls. Her delicate fingers caressed his sack softly, rolling each testicle gently within their sac. As she did so, she hit his cock against her cheek, causing Harry to shudder involuntarily under her touch, globs of pre-cum painting her delicate cheeks.

Iris looked up at Harry with wide, eager eyes, her gaze locked on his. "I know it wasn't easy for you to agree to this, Daddy," she purred, her voice dripping with lust. "And I want to show you how grateful I am."

With that, Iris opened her mouth wide and closed it around the head of Harry's cock. She sucked on it softly, swirling her tongue around the crown as she let it pop in and out of her mouth.

Harry groaned, closing his eyes as he felt Iris' hot, wet mouth envelop his cockhead. He reached out to brace himself on the armrests of the chair, grinding his teeth as he felt her slender fingers grip his shaft more tightly.

She began to bob her head, sliding her lips up and down the length of his cock with a desperate enthusiasm. Harry could hear the squelching sound of her saliva as she worked him, her tongue slithering all over the parts of his shaft she could reach. She hummed softly, the vibrations travelling along the length of his cock, causing him to groan louder with every passing moment.

"Mmm, Daddy. You taste so good," Iris purred, looking up at him with doe eyes while she slurped down his cock.

Harry groaned, his hips bucking forward as he felt Iris' lips slide down his shaft. He could feel her throat constricting around his cockhead, and he knew she was taking him as deep as she could.

"Iris, you don't have to..." Harry started, but the words died in his throat as Iris pulled back, letting him slip from her mouth with a loud, wet pop.

"I want to, Daddy. I want to make you feel good," Iris replied, her voice trembling with excitement.

With that, she went back to work, her head bobbing up and down faster and faster, her hands joining in to help her. She massaged his balls, tugging on them gently as she sucked on his cock, her tongue swirling around the head with every upward motion.

"Ahhh, Iris...you're going to make me cum if you keep that up," Harry warned, feeling his orgasm building up.

Iris moaned at his words, the vibrations travelling through his shaft. She bobbed her head faster, looking up at him with those sparkling green eyes, pleading for him to fill her mouth.

Harry couldn't resist much longer. His balls tightened, his stomach clenched, and his breath hitched as he felt his orgasm roar through him.

With a loud groan, he came, his hips bucking forward as he shot load after load of hot, sticky cum down Iris' waiting throat. Iris moaned around his cock, swallowing every drop as he filled her up.

When he finally finished, Iris sat back on her heels, wiping her chin clean with the back of her hand. A satisfied smile spread across her face as she looked up at him, her eyes shining with pride.

"Thank you, Daddy," she whispered, before straddling his lap once more, trapping his straining erection between them, to give him a chaste kiss on the cheek.

Harry blushed, unsure of what to say. He felt a strange mix of emotions coursing through him, but he couldn't deny the warmth spreading through his chest.

"Come on, Daddy. Let's head to the bedroom," Iris suggested, her voice sultry and seductive. It seemed she had no intention of stopping now that she had gotten a taste of him.

Harry nodded, allowing her to lead him by the hand towards the back of the tent.

But before they could get far, there was a sudden commotion outside. The sound of yelling and screaming filled the air, and Harry knew something was wrong.

How could he have forgotten? The Death Eaters had attacked the Quidditch World Cup Final in his own universe, and it was likely that they would do the same here. He had hoped that events would play out differently in this universe, since he had already made progress on stopping Voldemort's return, but it seemed fate had other plans.

He quickly pulled on his trousers, tucking his still-hard cock back into his boxers before grabbing his wand and rushing out of the tent to see what was happening. His fun with Iris would have to wait - duty called, after all.