Horndog
Copyright© 2025 by MrPlotThickens
Chapter 9. Horndog In Trouble
Erotica Sex Story: Chapter 9. Horndog In Trouble - Watch as Sirius navigates his way through the Hogwarts of the old days and the new. The way to a man’s heart goes through his belly, and the way to a woman's heart goes through her cunny—Sirius chose to live by those ideas.
Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa Fiction Fan Fiction High Fantasy Mystery Paranormal Magic Transformation
The seventh year started with a bang, quite literally.
James and Lily becoming Head Boy and Head Girl meant Sirius was covered from all sides with friends in high places. Then there was the whole first night shenanigans on his bed, but considering the risk, they chose not to reenact it.
Of course, the culprit was found. The glass of juice with the aphrodisiac in it was meant for Mary Macdonald and was prepared by her boyfriend. As Head Girl, Mary got some scolding, but since Lily wasn’t even angry about it, she let it go.
Autumn came, the month of November started, and with that approached the cool breeze of the approaching winter. Any time Sirius wasn’t having fun with Lily, making connections, training Occlumancy, or studying, he was working on implementing the treasure he found thanks to the Legend of Immortal Heart.
The change in him was also noticed by many, especially the Headmaster, who once invited him to talk in his office. With double meanings, he reassured the old man that he was still a good guy and that inheriting the family was the only objective. As always, the Headmaster just rubbed his beard and sent him away.
“Come on, we’re in our seventh year now,” Sirius groaned as he watched James again go after Severus in the exact place where James had once humiliated the brooding Slytherin in the fifth year, by the lake.
James scoffed, keeping his wand at the ready, “He challenged me. How can I refuse?”
My brother, focus on your other wand’s dueling, not this one. Sirius wanted to say that out loud but couldn’t.
They soon arrived at the edge of the lake, and Severus was already waiting for them there, seething in anger for some reason.
“Potter,” Severus sneered with contempt. “I see. The dog comes with his lackeys. Why, too scared of dueling me alone?”
“It’s your kind that slithers in groups, Severus. Let’s end this quickly and be on our way. I don’t have the entire day to waste on you,” James raised his wand. “Let’s see how well you can swim today.”
Severus said nothing, out for blood for good this time. It was evident in his eyes. He immediately flicked his wand, and in response, James also shouted.
“Stop! Both of you!” Lily came rushing just then and swung her wand to push one of them away so none of them would get hurt.
“Ugh!” Right then, Sirius groaned and clutched his head in extreme pain. The voice of the Oracle from that time rang again, muffled and multiplied. “What...?”
Death craves closer. You stand before one of the composers. The words were clear in his head, and before he knew it, he jumped ahead as he realized Lily’s spell, in her desire not to hurt them, wouldn’t be enough to push them away. Instead, she’d be getting in the way.
“Flipendo!” Sirius swung his wand at James while Lily swung it at Severus.
Right on time, their spells struck the two boys before they could mortally injure each other. James and Severus got thrown back quite a distance, falling on their backs with a thud.
“Do you want to get expelled from the school?” Lily went to James and scolded him.
Meanwhile, Sirius walked over to Snape, the one man he could see killing him in the future in some way because of the hatred they had fostered. “So you’re one of the composers?”
Severus sneered, “Stay back.”
Sirius shrugged and stopped reaching for him. But he had to leave a good impression in Snape’s mind as he felt the eventual moment of truth was slowly creeping closer. He needed more allies now than ever.
“We’re on the same team, buddy,” he said with a proud, pureblood-like smirk. “But in the end, will you fall to become his slave? Or will you choose to remain free? There’s never just one option. If you choose to accept the mark, be prepared to forever live in the dark.”
He knew his words wouldn’t make any sense to Snape right now, but he hoped something would come out of it. However, one thing was sure. The humiliation incident in the fifth year wasn’t going to be easy to overcome.
Grunting, Snape got up and left, not wanting to fight in front of Lily.
“You didn’t need to stop us, Lily.” James was still in fight mode and jerked away Lily’s hands. “I could have taught him a lesson. He’s the one who challenged me.”
“And get expelled?”
“Whatever,” James turned around and returned to school. Behind him, Peter followed, while Remus wasn’t there.
“Ugh!” Lily furiously stomped her feet. “Why can’t they just act normal?”
“This is their normal,” Sirius commented while walking over to her. “Don’t worry, they’ll be fine in a while.”
“Why didn’t you go with him?”
Sirius looked towards the lake and gestured at the tree, “I was thinking of sitting down calmly and planning out how to deal with my family this coming Christmas holiday.”
“You should be more worried about your N.E.W.Ts.”
“No, I need to worry about how to take my family inheritance and avoid the Dark Lord. I’m from the Black Family, Lily. They won’t stop until I’m crazy like them, or I’ve won,” Sirius said as he walked over to the tree with Lily following behind. “I don’t even know if I’m going to live very long with the kind of enemies I have now.”
She skipped closer to him and grabbed his arm firmly by her chest. “Don’t say that. You got us standing with you. We’ll help you in any way we can—I definitely will.”
He chuckled and sat down, resting his back against the tree and overlooking the lake, “I know you will—very well.”
“Wait!” Lily realized something. “This is where...”
“It all started. Yes.” Sirius remembered the day when he and Lily first got close to one another. It happened so spontaneously, and yet they felt no regrets, maybe a little bit of guilt. “Come here and have a seat.”
As he spread his legs wide, Lily approached and sat down between, resting her back against his chest, leaning back in warm comfort and looking at the beautiful lake. Both of them felt each other’s beating hearts, more relaxed than anywhere else.
Sirius wrapped his hands around her midriff and pulled her closer, feeling her bottom push against his crotch. Her red hair under his chin gave off a sweet, intoxicating scent, making the moment even more pleasant.
“Sirius,” she voiced softly. “James asked me.”
Sirius knew what she was talking about. Unknowingly, he breathed deeply and caressed her belly. “And?”
“I don’t know if I should get married so soon after school. I do like him emotionally and mentally but ... Is this the right time? There’s so much chaos outside.”
“There will always be chaos outside. That’s what the wizarding world is,” Sirius said as he lowered his face beside her ear. “Don’t wait. If you want it, just take it. If it makes you happy, do it.”
She smiled in his embrace and raised her right hand to caress his soft black hair, “Since when did you become this wise?”
“Since the moment I realized what’s at stake.” He inched his face lower, resting his lips on her neck and pecking it softly. “I don’t have many goals in life. Becoming Lord Black and living a happy life is all I want.”
“No marriage?”
“Nope, my bloodline ends with me.”
“Hehe, you’re crazy.”
“Not the first time hearing that,” he replied and slowly raised his hands from her midriff to her mounds and groped gently. Since they were just wearing their white shirt, he found no trouble feeling her arousing tips.
She began breathing in fits, her knees raising and the skirt sliding down her thighs to reveal her pale flesh. Loving his touch, she took one of her hands to the middle of her thighs and teased herself.
Her head fell back to his chest once Sirius opened a few of the top buttons and slid his hand inside her shirt, touching her heated flesh aching for attention. He teased her tips and fondled her round, pert breasts with tight squeezes, massaging them until she let out a suppressed moan.
“How about a quick one?” He whispered into her ear.
“Umm...” Lily licked her lips and exhaled loudly. The next moment, she raised her hips a little and took off her panties before putting them in her pocket. “Love to...”
Always the wild one. He couldn’t help but appreciate just how open to fun she was.
Without wasting time, she turned around to face him. First, she leaned over and locked her lips with Sirius’, exchanging a deep kiss. Her tongue greedily dug into his mouth and flicked against his tongue.
Sirius closed his eyes and grabbed her ass roughly to pull her over his crotch. With her parted knees, she fell over him, allowing him to ravish her slippery lips and capture her sweetness.
A few minutes spent like that, lost in lust, Lily decided to continue downward. She beckoned a little and rested her knee on the grassy ground, then lowered her head to his crotch. Quickly opening his zipper, she took out his semi-hardened shaft and mouthed it.
“The best,” Sirius muttered as soon as he felt her wetness around his skin. The sensation he had felt almost daily over the past few months was still as exciting as the first time. On top of that, her bright and beautiful face, the hair, and the arousing noise she made while slurping up and down his cock quickly brought him to the peak of his erection.
But then Lily lowered her head further and licked his cock from the balls to the tip like it was a popsicle, her greedy green eyes constantly staring at him.
Fighting for life is all worth it for this. Sirius thought jokingly and gently caressed his fingers through her long hair, helping her keep them clean.
Inside his shoes, Sirius felt his toes twitch and curl. Her tight mouth sucking up with intense strokes, brought him to the edge too easily. However, he stopped her right then, making her stand up and lean her arms over the tree.
As he remained seated, he raised her skirt and tucked it around her waistband. There, he saw her drooling, warm petals present in the wild open air. Quickly, his hands went up, caressing and ticking her soft legs, fleshy thighs, and onto the ass before pulling her closer to his face.
He gave a lick to her sweetness.
“Ah!” She reacted right away.
Sirius chuckled and dug his lips into her wetness. His tongue probed her bud of wild pleasure until her knees shook, and her head fell forward between her arms that supported her leaning body. She moaned while one of his fingers found its way sliding into her core.
“Sirius ... Oh...” She tried to press her thighs together only to receive Sirius’ harsher licks. He prepared her for the pounding with love and care.
“You taste good,” He muttered, knowingly embarrassing her.
Just like that, he teased her entrance and clitoris for a few minutes. All the way until he felt her slit shuddering and dripping with her juices. But as she began to approach her climax, he let go to go further.
“Sit.”
Lily looked down hungrily and lowered herself onto his lap, her knees parted again, facing him. She straddled his thighs and stroked his cock with her hand a few times, rubbing it on her slit to lube it again. Then, she pressed the swollen knob against her aching furnace and lowered herself.
“Ah ... Fuck, you’re still too big for me!” She cursed, having grown comfortable sharing warmth with Sirius. “B-ugh ... I like it.”
“Hehe,” Sirius chuckled and pressed her body closer to his face to eat her breasts. Knowing every inch of her skin, he knew where she felt the most sensitive.
His hands went behind and clenched her cheeks, spreading them while pressing one of his fingers down her backhole, scaring her with short squeezes so only the very tip would open her a little before backing out.
“Oh ... hehe ... stop being so naughty!” She giggled while riding his cock. Playfully, she patted his face, caressed his hair, and just felt his plunging length hit her deep, spreading her rim and insides so good that she felt his pulsing veins as well.
Slow and steady, his hips also moved slightly to help her. There was a different sort of excitement in fucking in the open. With his cock deep inside her, her ass in his palms, her breast in his mouth—they weren’t naked and yet felt completely exposed to the world.
“Ugh ... Yes, yes.” Lily took support on Sirius’ shoulder and threw her head back while riding violently on his hard cock. Her hair was disheveled in no time, but her face was full of bliss. She let herself be taken over by the pleasuring need.
With the musky scent in the air, his mouth nibbling on her nipples, he devoured the sticky feeling of her core around his shaft. Feeling her tight hole as she split open for himself each time she bounced on him, he noticed the climax approaching.
By instinct, he raised his hips to pump deeper into her and earned her whimpers, whining moans of ecstasy. The ignited desire was unstoppable as both of them wore down each other’s bodies to gain their coveted pleasure.
“Ah, oh, oh ... Sirius, I think I’m about to...” Lily warned him. “I don’t wanna-oh fuck ... dirty your clothes.”
Sirius didn’t give a damn and pumped upwards while holding her on himself. He felt her straining walls around him, the spasms becoming noticeable with each push. His own cock twitched inside, and thankfully he didn’t have to ask before spilling as Lily never complained.
“Ugh ... Me too,” he groaned and shook violently before slamming thrusts of climax deep inside her and spilling himself.
Right then, as Lily felt his warmth coat her insides, she reached her craving release with a frenzy of simultaneous explosions. She quivered on top of him with his entire cock still resting deep in her plundered sheath. Her blissful spurting juices slowly leaked out as he started to go limp.