PH! Deku getting hit with a quirk that sends him back in time where he meets MS! Katsuki.

[NSFW]

CW: dub/non-con, underage, age gap

Deku was in the middle of fighting a villian when the villian and all his hero partners disappeared. The damage to the surrounding buildings had been undone too, like the fight hadn't even happened. Huh?

Izuku was standing in the same place he had been, but everything looked

slightly off.

What happened? The man wandered into a store, surprised to find All Might merchandise on the shelves. All Might was still a popular hero, but since he retired and new heros came into light his merchandise was a lot harder to find. Izuku picked up a magazine,

finding it dating several years back. Had the villian he was fighting send him back in time?

Izuku left the store, deciding the best place to go would be home to his mom, let her know the situation and hide out till he was back in his own time. Luckily he wasn't too far from his

home town, taking a bus ride and passing the middle school, he wandered towards his old house.

"Deku?" A voice sneered behind him. Izuku turned around, finding a familiar blond boy, much younger than last time he'd seen him.

"Kacchan." Izuku smiled, walking over. Katsuki didn't

seem very pleased to see him, let alone have to look up to see his face. Izuku had grown a lot, both in size and height since middle school.

Katsuki scowled, "What kind of bullshit is this? Five minutes ago you were still a weakling and now-"

Now Deku was stacked. And hot.

Extremely hot. But he was still the same stupid nerd.

"I got hit with a quirk that sent me back into time." Izuku explained, "I was fighting a villian and-"

"A villian? You idiot! You don't even have a quirk!" Katsuki scolded. There was no way Deku grew up into this beefcake.

Absolutely not. Katsuki had to teach him a lesson, show this adult Deku who was really going to become the hero out of them.

"Ah right, you don't know about that yet." Izuku chuckled, scratching at his chin.

"Know about what?" Katsuki hissed in annoyance.

"It doesn't matter,

you'll find out soon enough." Izuku shook his hands, not wanting to ruin the future.

"Well," Katsuki scoffed, "If you're really from the future you shouldn't be wandering around. My parents don't get home till late, come to my house."

"Are you sure Kacchan? I was going to

stay at my house." Izuku questioned.

"If Deku sees you like this he'll be even more annoying." Katsuki huffed, "Come on. You know where I live."

Izuku guessed Kacchan had a point, he might ruin Izuku's future if they met. So, he followed along the blond.

"So are you a pro hero

now?" Katsuki asked when they walked inside his home, heading towards Katsuki's room. Izuku nodded, "Yeah. We both are."

"Of course I am, I'm the best." Katsuki laughed, "I'm number 1 aren't I?"

Izuku hesitated, "You're close." He probably shouldn't tell Kacchan that the two of

them were constantly fighting for a higher spot in the hero rankings, neither have made it to number 1 yet, but right now Izuku was 3rd while Kacchan was 4th. Izuku was sure Kacchan will push ahead to 2nd soon enough, but he'd follow right along.

"Knew it." Katsuki snickered. He

Crossed his arms and turned to Izuku.

"You may be strong now, but I bet I could still beat a low rank wanna be like you." Katsuki stated proudly.

Izuku chuckled at Katsuki’s brashness, "I'm not sure, I've got a lot of years on you."

"Oh yeah? Let's fine out then." Katsuki

smirked.

"You want to fight?" Izuku questioned, amused. When Kacchan nodded, Izuku couldn't help but want to agree. He was just so cute!

Katsuki took them to his house, leading Izuku down the familiar halls towards the gym room. He and Kacchan spared there all the time, Izuku

knew how to control his quirk during their matches enough to match the size of the room.

After stating some ground rules, their match began. Izuku only used 5% of his strength, not wanting to disappoint Kacchan by winning right away. In fact he kind of made it a challenge to

beat Kacchan with only 5%.

Izuku rushed to the side to avoid a punch, but Katsuki blasted himself into him immediately after, tackling Izuku to the floor. Impressive!

"Ha! Knew I could beat you." Katsuki grinned, breath heavy as he pinned Deku down. His body pressed down hard

on Izuku's, trying to keep the bigger man stuck on the floor. Izuku wiggled a bit, ass pressing up into Katsuki's crotch. The blond gasped, his already hard dick enjoying the slight friction. Izuku's eyes widened as he felt the boys boner. Kacchan did tend to have the habit of

getting a boner when they fought, Izuku just hadn't known it was a habit that started so early. Wish he'd known that at UA....

Izuku slouched onto the floor with a fake sigh, "You beat me Kacchan."

"Damn right I did. Ha! How can you call yourself a hero if you can't even beat

a middle schooler?" Katsuki mocked, letting his hands trail slowly down Deku's body, stopping on his ass.

"I should teach you now that you'll never be a hero." Katsuki continued, grabbing handfuls of Deku's plush ass. Izuku gasped out, finding himself almost guilty at how this

turned him on.

Katsuki ground his hips down over Deku's ass, erection growing harder. Without warning, Katsuki tore open the seam on Deku's clothes, baring his pale freckled ass.

"Kacchan!" Izuku whined, pretending he didn't want the blond to try and take advantage of his

false win.

Katsuki grinned, slapping the man's ass to watch it jiggle. It didn't take long for Katsuki to pull his cock out and slide it between Izuku's cheeks.

"Shitty nerd, can't even fight back. You're a pathetic excuse for a hero." Katsuki continued as he rocked his hips,

moaning slightly at the feeling of hotdogging this hot stacked adult Deku.

"I bet villians get their way with you all the time, huh De-ku." Katsuki taunted. Just a little longer...

Katsuki spread the man's ass, finding his tight hole quivering. Now.

In a flash, Izuku flipped

them over, easily pinning Katsuki down to the ground by his wrists.

"What the-" Katsu studdered, struggling to get away from Deku's grasp.

"You really thought you could take down the number 3 hero?" Deku scoffed, "Number 4."

Katsuki's eyes widened in surprise, "No way..."

"Yeah, you're under me in ranking." Izuku grinned, enjoying the shock on Kacchan's face. The blond boy struggled again, fear starting to set in.

"I can't be, not to you. You're lying!" Katsuki whined, his struggles against Izuku weakening. Tears formed in the corners of his red

eyes, "I won't loose to you. I can't."

Izuku flipped the boy over expertly, grabbing at his pants to pull them down, exposing Kacchans ass.

"Shit Kacchan, even in middle school you had such a nice ass."

"Don't you dare!"

"Weren't you going to fuck me?" Izuku smirks.

(TBC)

"It was a joke!" Katsuki begged.

"Tsk tsk. You haven't lost your virginity yet, nows a good time for me to take it, don't you think?"

"Deku-"

Izuku pushed a finger into his hole, causing his hips to buck up and a loud whine to escape from his throat. Izuku chuckled, Kacchan

was so cute like this.

"Did I mention we're dating in the future?" Izuku asked sweetly as he worked his finger carefully into Kacchan's tight hole.

"I'd never date yo-" Katsuki chocked on his own sentence. Izuku laughed, shaking his head.

"You're so cute when you deny you like

me." Izuku purred, "I'll change your mind, okay?" Izuku kissed at the back of Kacchan's neck, holding the boy expertly down.

After realizing he wasn't escaping anytime soon, Katsuki finally slumped onto the floor, relaxing around Izuku so it wouldn't hurt as much.

"You're not

going to fuck me." Katsuki stated weakly.

"And why won't I?" Izuku asked, amused with the blond. He almost can't believe this cocky little slut used to tease him. Not when he's down on the floor being taken advantage of, tears pooling in his eyes.

"You're a pro hero. You

wouldn't risk it."

"And who would find out? You are my boyfriend afterall. Plus, no one will be able to prove I was even here once the quirk wears off." Izuku pointed out, "You don't want me to fuck you? You seemed pretty interested in having your way with me earlier."

Katsuki

bit his lip. He didn't want Deku to fuck him. Right? But his finger was starting to feel real good, and he couldn't lie that he didn't have a crush on the nerd. Plus he was /hot/ now.

Izuku flipped him onto his back once more, looking down at him with a small grin, "Knew it."

He grabbed Kacchan's legs, hoisting them up so he could line his crotch with Kacchan's ass.

"Tell me you want me." Deku purred, grinding against his ass.

"No way." Katsuki hissed.

"You love when I top you, don't be shy now." Izuku hummed, "I'll be gentle with you. But I know

you like it rough."

Izuku continued to grind against him, pulling little whines and moans from Kacchan.

"I won't fuck you until you tell me to." Izuku chuckled, enjoying the pink on Kacchan's cheeks.

"Go to hel- ah!" Katsuki cursed under his breath, hips rocking back against

Izuku, cock leaking precum onto his clothes.

"I can do this all night, you're probably more sensitive than I am." Izuku threatened with a smile. Katsuki didn't like this side of Izuku, the confident sexy side. It was too much too handle.

"F-fine!" He finally hissed out.

"Hmmm? What do you want, Kacchan?" Izuku continued to tease. Katsuki cursed again, hips bucking wildly against Deku for some type of release.

"Fuck! Fuck you." Katsuki growled, "Just fuck me already shitty nerd!"

Izuku purred happily, spreading Katsuki’s cheeks and lining

himself up.

"I remember you being a lot more stubborn in middle school." Izuku spoke as he carefully pushed his cock into Kacchans incredibly tight hole. Fuck. Kacchan always felt amazing, but this was beyond anything he was used to.

"Shit Kacchan, you're so tight." Izuku

mumbled as he sunk in inch by slow inch.

Izuku was huge! Cock thick and long. Katsuki clenched his fists tightly as Izuku moved his way into him.

"Shit! Be more gentle, will ya?" Katsuki huffed, breathing heavily.

"It'll feel better soon." Izuku promised. He pulled Kacchan up

a bit, giving him a deep kiss. The blond complied, moving his lips against Izukus in inexperience.

"Good boy." Izuku purred into his mouth. Katsuki bit his lip for that, making Izuku chuckle. Still just as fiesty as ever.

Katsuki's arms wrapped around Izukus neck as he moved

himself into Izuku's lap, sitting on his cock.

"Mmm, you wanna take charge?" Izuku asked, meeting his gaze. Kacchan's eyes pierced through him like daggers, "I'll do better than you."

"Go ahead." Izuku snickered.

Katsuki slowly raised his hips up, then down. He experimented

with the pace, trying to find something that worked for him.

"You're so slow." Izuku commented, placing his hands on the boys hips. He raised him up before slamming him down on his cock.

Katsuki moaned loudly, quickly covering his mouth with his hands in surprise.

"There we go." Izuku grinned, starting to pull Katsuki up again. He pulled the boy up and down on himself like a toy, moaning gently as Katsuki cried out in pleasure from the rough abuse.

"Fuckfuckfuck-" Katsuki gasped, feeling his climax building. Izuku moved rougher, seemingly

caring more about his own climax than Kacchan's.

"Shit Kacchan, so good!" He panted out, "Gonna fill you up."

"D-don't."

Izuku ignored him, spilling his seed into Kacchan. He didn't stop there though, riding out his orgasm to finish Katsuki off.

"Fuck Deku, I'm gonna-!"

And just like that Katsuki fell onto the floor, Deku no where to be seen but his cum still pouring from his ass.

Did the quirk wear off?

"Fuck!" Katsuki cried out in desperation and anger. Shitty nerd didn't even get him off! He'd get him back for this....

The next day at school, Katsuki found Izuku scribbling in his stupid notebook.

"Follow me." Katsuki demanded, grabbing Deku's arm and tugging him into the bathroom.

"Wah-! Kacchan what?" Izuku asked in surprise as he was dragged along. Katsuki shut the door, locking it behind

them.

"On your knees, now." Katsuki demanded.

"Huh??"

Katsuki didn't wait, pushing Izuku to the floor.

"Open your mouth." Katsuki said, pulling his aching cock from his pants. Izuku's eyes widened, "N-no way. Kacchan wants to- with me??"

"Shut the hell up you pervert. Open

wide."

Izuku opened his mouth, unsure if it was fear or something inside him that wanted Kacchan making him oblige.

Katsuki wasted no time burying his cock into Izuku's mouth, grabbing his hair and roughly pulling him down onto him.

Izuku coughed as Kacchan forced his way into

his mouth, tears gathering as he tried to breath.

"Pathetic. I can't believe someone like you wants to be a hero." Katsuki scoffed. There was no way the Deku from yesterday had been telling the truth. He couldn't believe it, not with Deku down on his knees in front of him right

now.

He used Izuku's mouth roughly, not caring about the tears streaming down Izuku's cheeks as he struggled to breath.

When he finally came, he still felt unsatisfied. Nothing was ever going to compare to pro hero Deku... all he could do now was wait for the future.

[END]

If you liked this thread and/or wanna see more problematic content from me, consider donating a Ko-fi or subscribing to my Patreon!

http://Ko-fi.com/fireboy  http://Patreon.com/FirecrackerStan