After their fight that night, Bakugou and Deku resumed their normal life. Since he had been told about the origins of Midoriya’s quirk and his link with All Might, Bakugou was filled with the desire to make sure the little nerd didn’t disappoint their idol. 

And in between classes and internships, the two young men tried to confront their skills on a regular basis. Kacchan tried his hardest to bring forth Deku’s potential, but was rapidly convinced that the latter did not fight seriously. 

‘There must be a way to motivate him…’ Bakugou thought as he watched his boyfriend from the other side of the dorm living room. 

The fiery boy knew first hand that Deku could become as competitive as anyone if you rubbed him the right way. 

One day, after coming to completion, Kacchan was resting on top of Midoriya, when something sparked in his mind. He jerked his head up and stared at his exhausted lover. 

“Hey Deku! I have a proposal to make!” Bakugou said with a grin. 

“W-what…?” Izuku replied, narrowing his eyes. 

“I’ll only say it once, so listen carefully! If you ever manage to beat me during one of our training fights, I’ll let you fuck me!” 

Deku’s eyes opened wide with surprise; and he gaped at Kacchan and couldn’t talk. The reaction made Bakugou laugh.

“You heard me right! So if you ever want to have a chance to pound my ass, you better fight seriously, little nerd!” 

Bakugou left Deku’s room humming, very proud of his new find. 

‘Now that should motivate him a bit more!’ 

The bait thrown to Midoriya actually worked: he suddenly started training with more ferocity and dedication. But to Bakugou’s own consternation, the freckled boy managed to get a victory a lot sooner than anticipated… 

He overthrew Bakugou to the ground and grinned down at him.

“Aha! I got you, Kacchan!! I won!” 

“Yeah, yeah, great for you…” the spiky-haired boy muttered as he got to his feet. 

“Don’t forget about your promise, okay?!” 

“I always keep my word, you know that!” 

An awkward moment of silence passed, when Deku stared anxiously at his boyfriend. He fidgeted and cleared his throat. 

“D- do you want to do it at my place then…?” Izuku asked shyly. 

Bakugou felt hot all of a sudden. 

“We’re doing it now?!” he barked. 

“W-well… I thought that you would want to be done with it quickly…” Deku replied. “B-but if you want to wait, that’s fine too!” 

Bakugou sighed, “No… it’s fine… You’re right, let’s go.” 

The two lovers entered Midoriya’s bedroom in silence, and slowly stepped towards the bed. 

“Sh-should we take a shower first…?” Izuku asked hesitantly. 

Bakugou thought for a second then nodded. “Yeah… couldn’t hurt I guess…”

So the couple went to wash up and came back to the room minutes later.

Izuku was now facing his stubborn boyfriend, not really knowing what to do. He glanced up and initiated a shy kiss. Kacchan groaned and grabbed the back of Deku’s head, entangling his fingers in the curly hair. 

“Now’s not the time to play timid, little nerd…” he said before capturing the boy’s lips greedily. 

They kissed deeply and fell on the bed together. Deku started to go down on Kacchan, taking his clothes off as he went. He explored Bakugou’s body and took his time. A little too much time for the latter, who groaned with frustration again. 

“Would you stop that and just get it done! It’s annoying!” 

“Sorry Kacchan! It’s just, I… Well I probably won’t be able to do that ever again, so I want to touch you while I still have the chance!” Izuku said, looking up.

He kissed down Kacchan’s torso, played a little with his nipple (which happened to be sensitive) and came up to the hem of his shorts. 

Midoriya gulped and glanced up as his shaking hands reached up to unzip them. 

“I- is it really okay…?” he asked hesitantly. 

“Tsk, yes!! Hurry up already!” 

Bakugou averted his eyes when he felt his trousers come undone, exposing his crotch and lower body. He could not hide the fact that he was aroused, and that annoyed him a lot. He bit his lower lip and flinched as Deku’s hands caressed him. 

“You have such a nice body, Kacchan… I can’t believe I’m about to…” 

Midoriya couldn’t finish his sentence as Bakugou caught both of his hands and made him spin around. He was now on top and strided the boy’s waist. Kacchan pinned Izuku’s hands on either side of his head and bent over. 

“Stop… fucking... talking!” Bakugou ordered. 

Deku could clearly see the blush on his face but didn’t mention it. 

“O-okay, sorry…” 

He peeked up and stared at the muscular body above him. It was in these moments he knew he was gay... He could feel his own manhood throb in his pants and gasped when Bakugou rubbed his butt against it. He turned his head and tried to reach out for the drawer in his side table. He quickly withdrew a set of condoms and lube that he placed on the bed. 

Bakugou sat up and looked down on Deku with his head cocked to the side. He licked his trembling lips and raised himself up on his knees. 

Bakugou lowered Midoriya’s trousers and stared at the erected dick for a moment. Then he glanced up at the flushed freckled face and grinned.

“Well at least it’s smaller than mine, so it shouldn’t be too awful…” 

Without waiting any longer, the impatient boy aligned his butt with Deku’s member, and was about to impale himself on it when the latter stopped him. 

“W-wait, Kacchan! Shouldn’t you prepare yourself for it…? Like you do for me?” he asked worriedly. “It will hurt otherwise…” 

“You don’t need to worry about that…” Bakugou exhaled. 

He lowered himself and took the tip in. 

“The c-condom…” 

“For fuck’s sake, you…” Kacchan grunted. “I fuck you without any condom all the time… Why would I make you wear one for me…?” 

“I…. don’t know…” 

“Just shut up, will you… and focus on what we’re doing!” 

Bakugou took another inch in, and Midoriya gasped.

“K-Kacchan... so tight!” 

“Feels good, right?” Bakugou smirked. 

As he was about to take everything in, Kacchan suddenly felt Deku’s hands firmly grip his hips. Then, with an abrupt movement, he jerked his own hips upward and plunged his manhood deeper inside Bakugou. 

The latter gapped. His eyes rolled to the back of his head when all of Midoriya was in. 

“Fuck… this is crazy…” Kacchan mumbled, a hand over his mouth. 

He didn’t know if it felt good or painful; all he knew was that he felt stuffed, but didn’t hate it…

After adjusting to the width of Deku’s dick, Bakugou’s body started rocking on its own. He slowly placed his hands on his lover’s torso and moved up and down in little thrusts. 

“Let’s… finish this...quickly!” he muttered. 

He accelerated the movement of his hips and tried to bring Deku to his climax. 

“Haa...Haa… Kacchan! I- I can’t…” 

Instinctively, Midoriya extended his arms and touched Bakugou’s ass. He squeezed the two buttcheeks and started thrusting his pelvis in rhythm with Kacchan’s movements. 

Bakugou hadn’t expected this and suddenly felt something stir in his lower body. He could feel his butthole twitch and clench to Midoriya’s shaft with each thrust. As hard as he didn’t want to admit he was feeling good, Bakugou’s body was betraying his true sensations. 

At some point, Deku’s thrusts became a lot more confident; and Kacchan’s mind went blank. He let his head roll back and arched his back as the ecstasy slowly built up in his southern region. His only support was Deku’s firm hands around his waist, and his own hands digging into the boy’s thighs. 

“Shit…! Ngh~!” 

After minutes that felt like hours, Bakugou felt a tingling sensation in his belly, and the familiar burning sensation in his dick. His eyes grew wide. 

“W-wait! Slow d- hmph!” 

The spiky-haired couldn’t even speak; the current amount of pleasure was mind blowing. 

“K-Kacchan, I think I’m cu… Aaanh~!” Deku cried out.

His body shook with spasms as he suddenly came to completion, exploding inside Bakugou. The latter came too, both from the front and the back. He panting heavily, slumped over Midoriya, eyes closed. His whole body was still tingling all over; and he could feel Deku’s seed filling him, which made him blush even harder for some reason. 

“Did it… feel good?” Izuku asked hesitantly. 

Bakugou’s eyes slowly opened and stared down at the freckled boy. The stupid question made him chuckle; and the chuckle reminded him that he still had a penis inside his asshole. 

“Ugh…” 

“Mnh! You’re twitching around me, Kacchan…” 

Bakugou groaned and covered Deku’s mouth with his hand. 

“I told you to shut up, didn’t I...?” 

He slowly raised his hips up and withdrew the now limp manhood. He could feel the semen dripping down his thighs.

“It wasn’t too bad…” Bakugou said, trying to ignore the weird sensation. 

He glanced at Deku, and saw that he was smiling tenderly. 

“I’m glad then!” 

“Hmph! I can’t believe I had to put my ass on the line to motivate you…” Kacchan grumbled.

He collapsed on Deku and bumped their foreheads together. Then he played with the boy’s unruly hair and sighed. 

“Well, at least you’re not a virgin anymore now…”

Deku blushed hard and smacked him.

“S-shut up…” he pouted, looking away. 

Bakugou smirked and pressed his lips on Deku’s neck. 

“Would you look at that! The nice boy snapped back!” 

It was Deku’s turn to groan. He gathered all his remaining strength and overthrew a laughing  Kacchan. Now perked up above him, Izuku pinned him down to the mattress. The two young men stared at each other and felt their desire rush back. 

“If… I win against you another time, will you… let me do it again?” Midoriya asked, an expectant look on his face. 

Another grin adorned Bakugou’s lips. “Did you like it that much?” 

Deku nodded, “Yes! It felt... amazing!” 

“...” Kacchan thought for a second, but nodded in the end. “Fine… If you miraculously manage to beat me again, I’ll let you take my ass again. But I’m warning you: I will become even stronger, so you better fight with all your might!” 

The two gazed at one another and finally sealed their lips together. Bakugou’s hands travelled down Deku’s body and reached his backside. He slid a finger in the crack and whispered in Izuku’s ear. 

“Now it’s my turn to fuck you…” 

Thus ends the story of how Midoriya Izuku came to be a top for the first time in his life.