Thaddeus x Reader
Note: this is a gift for my Thaddeus lovers‼️🌚 This will be the last update for the time being, I'll be back soon. Love you all💋
*Inspired by chapter 59*
Cw: slow burn,nsfw,mdom,mdni
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Steamy Lesson
The cold breeze envelopes you into the timeless nights of Kowloon Hell as your mind races back to the events that led you here.
It all began on that island—an isolated stretch of land where the D-rankers were gathered for testing. The mission was simple: survive or be slaughtered. But it was there, between the chaos and bloodshed, that you and Thaddeus crossed paths.
It was on that island that you asked Thaddeus to be your teacher. Watching him fight stirred something deep within you—his combat skills were both terrifying and mesmerizing, leaving you in awe while also sending a chill of fear through your veins.
You glance around. The training area is secluded, hidden beneath the shadow of a ruined building. The growing darkness of dusk makes the atmosphere unsettling.
The name of this city, after all, is spot on. It does look quite like hell.
"Are you ready, little one?" And there he is, with his annoying little smirk.
You couldn't stand him. How could you?
He's an asshole pretending to be a goody two-shoes. You can't wrap your head around the fact that everyone finds him fun to be around.
He's just a little brat, walking around like the world belongs to him.
That smile of his, the one that always lingers on his lips, as if he's holding some secret he refuses to share, makes your blood boil. It's as if he knows exactly how to push your buttons, teasing you as if he finds your irritation amusing, as if your every reaction were a game to him.
You hated how effortlessly he seemed to get under your skin. It's maddening. If only he'd stop dragging you into his twisted games. But no, he's always there—the more you try to ignore him, the more it feels like he's just waiting to prove you wrong.
And now that you've spent even more time together, as if it were possible, Thaddeus seemed even more irritating. The tension between you two is palpable, an unspoken challenge hanging in the air, charging every movement, every breath. The training sessions were a constant reminder of the fine line between hate and desire.
Several weeks had passed since your first lesson together. You remembered his words:
"I won't be a gentle teacher," Thaddeus said. "I will push all your limits. You'll learn discipline and perseverance."
And it was very much the truth. He did, in fact, break all your boundaries and limits—not that it was a bad thing. He's a good teacher; he just has a very unique and questionable way of teaching.
But it was worth it. You made great progress.
"Today you'll fight me," Thaddeus snapped you out of your thoughts, throwing some bands at you to wrap around your hands. "Should we make a bet, doll face?" His languid smile threw you off. You were startled by this sudden change of behavior; his eyes sparked with mischievousness.
"What kind of bet?" you asked cautiously. It was obvious that this was just another one of his twisted mind games, where he is the only one to take pleasure from ruining others.
"If I win," Thaddeus continued, his voice dripping with amusement, "you'll have to follow my orders for the next week. No questions, no complaints."
Your mind racing as you weighed your options. Thaddeus wasn't the type to lose, and the thought of being under his orders unsettled you. But then again, you had no intention of letting any weakness show
"And if I win?" you asked, trying to keep your voice steady despite the growing tension.
Thaddeus’s grin widened, a glint of something darker in his eyes. "If you win, I'll leave you alone for the same amount of time. No games, no tricks, just peace."
It sounded alluring .Too good to be true.
A rare opportunity to be free of his manipulation, but something inside you told you it was a trap.
"What’s the catch?" you asked, narrowing your eyes.
He chuckled softly"No catch, doll. But you'll have to earn it."
The Apostle assumes a combat stance, smirking quietly to himself.
He revels in your reactions; they ignite a dark, dangerous fire within him that he can't quite comprehend. That relentless, stubborn attitude of yours drives him to the edge, making him eager to break you—body and soul—in more ways than one.
"Let's see what you got, doll face," he says mockingly.
This will be interesting, he thinks to himself.
--
The air was thick with the scent of sweat and leather, the only sound being the soft, rhythmic thud of your shoes against the ground.
Thaddeus’s eyes gleamed with that familiar playfulness as he took his stance once again.
"You can’t even keep up with the basics," he remarked, his voice dripping with amusement as you struggled to block one of his kicks.
"Still think you’re ready for this?" His gaze pierced right through you.
"Shut up, asshole." With a fierce grunt, you lunged forward, aiming to land a punch.
"Oh~" he chuckled. "You shouldn't run your mouth. I'm your teacher, doll face," he said, dismissing your attempts to hit him.
Thaddeus came closer, positioning himself behind you. You could feel the heat emanating from his body.
"Here, let me help you." His lips brushed against your ear, his whisper low and husky, his hands landing on your waist to correct your form.
The heat from his touch seared through your body, as if it burned you. You flinched but didn’t pull away.
"Relax... you're too tense," he murmured, his breath warm and tickling against your ear, giving you goosebumps.
Thaddeus noticed your reaction and smiled to himself, pleased. He relished the power—even if minimal—that he held over you.
He enjoyed toying with your senses—he squeezed your waist, light yet possessing, before letting go.
You clenched your jaw, refusing to acknowledge how his proximity affected you.
"Let's try it again."
---
Your body was on fire, every muscle screaming from the relentless pace. You knew Thaddeus was toying with you, deliberately letting you get close enough to think you might land a hit—only to dodge at the last moment. But his movements were smooth, almost predatory. You were both breathing hard, drenched in sweat, but neither of you was willing to admit defeat.
But just as you lunged one last time, your movements faltering for a split second, his hand shot out, catching your wrists.
In the blink of an eye, Thaddeus had you pinned against the wall. As you looked up at him, time seemed to stretch, the world narrowing to just the two of you.
"Looks like I won," his tall figure towering over you, making you feel tiny and vulnerable.
"Get off, weird glasses," you said, trying to sound indifferent, as if you weren't at his mercy.
He leaned in closer, a smirk playing on his lips. "Nope, I don't think I will."Thaddeus's voice was soft, but the challenge in it was unmistakable. His grip on your wrists tightened, and you could feel his pulse beating against your own, matching the erratic rhythm of your heart.
You swallowed hard, your mind racing for a way to escape his grasp. You tried to shift, to use your body weight to your advantage, but it was futile.
"Let go of me, Thaddeus," you spat, venom lacing your voice, though even you could hear the uncertainty beneath it.
"Tch, tch, tch," he murmured, lowering his head. "I'm the one who won the bet, pretty little thing."
It was the confirmation you’d dreaded: all of this was a trap. He had you exactly where he wanted.
Thaddeus traced a finger slowly down your jawline, then lifted your chin with deliberate tenderness. He leaned in closer, his face mere inches from yours. You closed your eyes, feeling the light brush of his lips against yours, and for a heartbeat, you wondered if he might kiss you. The mere possibility twisted your stomach.
But no. Instead, he rested his forehead against yours.
Thaddeus, clearly delighted by your reaction, let out a soft chuckle—a mocking, dark sound.
"You're a challenge, doll face," he whispered, his voice low, a dangerous edge to it. "And I like challenges."
His gaze searched yours, seeking something you couldn’t quite name.
Hate? Desire? Hunger?
"I’ll kiss you," he said abruptly.
Your eyes widened at his words. You turned your head, as if the movement could banish the turmoil rising inside you. "No," you whispered, more to yourself than to him. You wanted it—and the thought maddened you.
Thaddeus raised an eyebrow, savoring the sight of your flustered expression. "Yes," he said, and before you could protest further, his lips crashed against yours.
This was no gentle kiss. It was rough, hungry, possessive—an expression of all the unspoken tension between you.
Thaddeus held you with one of his large hands, pinning you in place, while the other slid down to your waist.
Every instinct in your body urged you closer to him.
Thaddeus softly pulls away, his lips brushing gently over your lower lip before he breaks the kiss.
"I knew you wanted this as much as I do," he murmurs, the words lingering in the air between you. A shiver runs through you at his certainty, and it makes you painfully aware of the truth you've been hiding—how much you've pretended not to feel, how much you've denied the pull of his presence.
You meet his gaze, unwilling to give him the satisfaction of seeing the effects he has over you. Your heart pounds in your chest.
"I hate you," you snap, the words laced with frustration—anger not just at him, but at the burning, forbidden desire that threatens to unravel you.
Thaddeus's lips curl into a knowing smile, a low chuckle escaping him. He sees right through the mask you’ve so carefully constructed.
"Hate me all you want, doll face. But you’re still here, aren’t you?"
He didn't need you to say it out loud:the kiss has told him everything he needed to know.
This wasn’t just a fleeting game anymore.
"Show me how much you hate me," he says, smirking knowingly. But you don’t have time to respond before his lips meet yours once more.
He lifts you effortlessly, without breaking the kiss—everything about him is too easy, too confident. It feels almost natural to be in his arms, as if this is exactly where you belong.
He sets you down gently on the weathered table, positioning himself between your legs.
A surge of irritation courses through you, and before you can stop it, your teeth sink into his lower lip, biting down with enough force to draw blood. The sharp, metallic taste fills your mouth, but it’s quickly drowned by the heat of his mouth on yours.
Thaddeus hisses, his breath sharp and shallow but he doesn’t pull away. Instead, his grip tightens around you, his body pressing closer, his heat seeping into every inch of you. “You have no idea how much I love it when you’re like this,” he murmurs, his voice low and dark...sending a shiver of something you refuse to name spiraling down your spine.
The words vibrate through you, igniting a hunger that you try desperately to suppress. But with each movement, each breath, you feel yourself unraveling further, helpless against the pull of his touch, the ache in your chest that makes it harder and harder to remember why you hate him so much.
With a kiss that mirrors the intensity of his passion, he takes a handful of your hair and tilts your head to expose the soft curve of your neck. He whispers in your ear, his voice low, "You drive me insane," before pressing open-mouthed kisses down your throat, biting, suckling—marking you.
Thaddeus hums softly to himself, savoring the sight of his marks upon you—so innocent,so delicate. It stirs something primal and visceral within him, a deep, aching hunger that refuses to be ignored.
In the back of his mind, clouded by desire, a thought urges him to stain you further, to make you submit to him. Only to him.
Thaddeus stands over you, breathing heavily.You’ve both crossed a line now. His touch, his words—there's no escaping it.
"You're mine now," Thaddeus murmurs, his voice dark but oddly tender as his gaze softens just enough to make your heart skip.
"Open your mouth," he commands, his voice low, almost a whisper, but heavy with authority.
You hesitate, feeling the weight of his gaze on you; however, your head tells you to follow his instructions to please him.
Slowly, you part your lips, looking up at him as if you were a puppy waiting for its owner's praise.
He smiles, pleased with your obedience, his eyes tracing every subtle movement you make. Then, without warning, he slides two of his fingers into your mouth. A small, almost inaudible whimper escapes your mouth as you take in the thickness of his fingers.
"That's it," Thaddeus murmurs, his voice thick with satisfaction. He begins to move, his fingers deepening inside your mouth. "Yes, good puppy," he praises, his tone dark and laced with dominance, amazed by how effortlessly you submit to him.
His breath quickens, each inhale sharp and shallow, as the heat between you intensifies.
The warmth of your mouth, the sight of your complete submission, and the way your tongue swirls around his fingers—it's almost too much for him to bear.
He pulls his coated fingers from your mouth, bringing them slowly to his lips. His eyes never leave yours, dark with lust and intensity, as he licks them clean, savoring the taste of you.
You almost whine in protest but then,realization hits you.
What the fuck just happened?!
You push him away with all your strengths
The pull between you is undeniable. You're tangled up in his world, in his games.
You turn around facing him once more.
"I hate you," you whisper, but the words feel empty now.He already knows the truth.
And with that awareness you storm out the training area.
The kiss, the tension, the games—this isn't over. Not yet.
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