Promise Me The Undoable [ Bakugo x Female Reader ] 🍋 Inspired By Nicole

Tension and Temptation

Tension and Temptation

The days after the combat training felt different. Y/N could feel it every time she stepped into class. Bakugo wasn’t just pissed—he was simmering, and it wasn’t just about the usual rivalry with Midoriya. No, something had shifted between them. Ever since that accidental fall, something lingered in the air, thick and heavy like static before a storm.

Y/N tossed her bag onto her desk, shooting a sideways glance at Bakugo, who sat with his arms crossed, jaw clenched. His red eyes flicked up to meet hers for just a second before he scowled and looked away, muttering something under his breath. She smirked, leaning back in her seat, already planning to push his buttons again.

“All right, class,” Aizawa’s monotone voice cut through the room. “Today’s exercise is about teamwork, so you’ll be paired off in teams. Again.”

As Aizawa droned on, Y/N’s gaze lingered on Bakugo, catching the sharp edge of his profile as he glared at the board. He looked pissed—no surprise—but there was something else. Ever since that training accident, she had noticed the way his eyes would dart toward her when he thought she wasn’t paying attention. She knew exactly what was going on in his head. Lust, irritation, and maybe just a bit of intrigue.

“Y/N, Bakugo. You’re up first,” Aizawa’s voice snapped her back to reality.

*Well, this ought to be interesting*, she thought, pushing herself up from her chair.

Time Skip

Out on the field, the tension was almost suffocating. Y/N stretched her arms casually, eyes locked on Bakugo, who stood across from her like a ticking time bomb, fists already sparking with small explosions.

“Ready to get your ass kicked?” he growled, cracking his neck.

“Careful, *Boom Boom Boy*,” she teased, stepping closer with a wicked grin. “You’re starting to sound desperate.”

He clenched his fists tighter, explosions flaring up. “Shut the hell up, I don’t need any of your bullshit. Just focus.”

But Y/N wasn’t going to let him off that easy. She stepped even closer, close enough to feel the heat from his quirk, her blue eyes gleaming with mischief. “Oh, come on, Bakugo. You can’t fool me. You’ve been looking at me like you’ve got something on your mind. What is it, hmm?” Her voice dropped, teasing.

“Shut. The. Fuck. Up.” His voice was strained, and she noticed the way his gaze flickered down her body for just a fraction of a second before he tore his eyes away, furious with himself.

*Gotcha*, she thought, a smirk creeping onto her face.

They started their training session, but the air between them was thick with something more than just rivalry. Every move she made, every time she got close, Bakugo seemed more and more agitated. His explosions were bigger, his movements more erratic. He was trying to focus, but she could tell—she was under his skin.

And she loved it.

Time Skip

Later that day, Bakugo found himself alone in the locker room, sitting on the bench with his head in his hands. He could still feel the heat of her breath on his skin, the way her eyes had taunted him. Damn it. Why the hell couldn’t he stop thinking about her?

“Fuck,” he muttered, slamming his fist against the bench. He was Bakugo Katsuki, future number one hero. He didn’t have time for this kind of shit.

But no matter how hard he tried, his mind kept drifting back to Y/N—the way she had leaned in close, the look in her eyes, that smug, knowing smirk. He could still hear her teasing voice in his head. It pissed him off how much it *turned him on*.

He grit his teeth, feeling his frustration build up. His body was reacting in ways that only made him angrier. *Damn it, she was everywhere*, in his head, under his skin, and driving him absolutely fucking insane.

“Stupid girl,” he growled under his breath, pacing the room. His fists clenched, a mix of rage and something else he wasn’t ready to admit.

Time Skip

The next day, the teasing only got worse. Y/N was relentless, finding every opportunity to push his buttons, leaning in too close, throwing little smirks his way whenever he let his guard down. Bakugo felt like he was about to snap, and part of him hated that he liked it.

During lunch, she casually dropped into the seat next to him, leaning her elbow on the table and resting her chin on her hand as she looked at him. “So, Bakugo, you gonna tell me why you’ve been acting so weird lately?”

He didn’t even bother looking at her. “Get lost.”

“Aww, come on. Don’t be like that. I thought we were getting along so well,” she teased, voice dripping with mock sweetness. She shifted closer, just enough that her shoulder brushed his, and she could feel him stiffen beside her. “Unless… there’s something you’re not telling me?”

Bakugo’s eyes flashed, and for a moment, Y/N could see the raw frustration simmering just beneath the surface. He was a volcano ready to erupt, and she was more than happy to push him over the edge.

“Back off, Y/N. I’m serious,” he hissed, his voice low and dangerous, but his eyes betrayed him. There was something else there, something he was desperately trying to hide.

She grinned, leaning in just a little closer, close enough to whisper in his ear. “Whatever you say, *Boom Boom Boy*,” she said, her voice soft but laced with challenge. “But I think we both know who’s really in control here.”

Bakugo’s breath hitched, his fists clenching as he fought the urge to grab her, to do something—anything—to shut her up. But all he could do was sit there, fuming, his heart pounding in his chest.

Y/N stood up, sauntering away with a triumphant smile. She knew she had him right where she wanted him. And for now, that was enough. But deep down, she knew this was only the beginning.