Summer vacation went on pretty uneventfully for Midoriya and Bakugou after they started dating. They would meet at one’s house or the other and spend as much time together as possible.

One day, it was so hot during the day that Bakugou had to postpone his daily run to the fresher evening to not overheat. He took his usual route, and secretly hoped to meet Deku on the way. 

And as fate would have it, at the corner of a street, Izuku suddenly rushed in, bumping into Kacchan at full speed. The two boys stumbled and fell on the floor on top of the other and took a few minutes to regain their spirits. 

“Ow… S-sorry! Are you okay…? Kacchan?!” Deku exclaimed, suddenly noticing who was under him. 

He raised himself up a little, enough to allow Katsuki to sit up, and checked if he was wounded. 

“Stop, Deku! I am fine!” Kacchan grumbled.

“Good then! Are you running too?” 

“Yeah. It was too hot during the day…” 

“Same here! Do you want to run together?” 

Bakugou seemed surprised by the offer, but he nodded curtly. 

“Why not…” he feigned indifference. 

At this point, the two boys stood up and Bakugou stared at Deku, who had a cute rosy tint on his freckled cheeks. Then his eyes were suddenly attracted to Izuku’s chest, and Katsuki noticed that his shirt was drenched in sweat; making his pink nipples apparent under the white fabric. 

Kacchan gritted his teeth as his eyes seemed glued to the view, and he groaned when Deku turned to face him. 

“Is something wrong, Kacchan?” the latter asked curiously as he noticed the troubled face of his boyfriend. 

Then Midoriya followed his gaze and finally realized the state of his shirt. He gaped at it and covered his chest with his hands. 

“Ugh… Why did I wear a white shirt…?” he mumbled in embarrassment. 

“Why indeed…” Kacchan echoed, his intense stare focused on Deku. 

Bakugou grabbed Deku’s wrist and led him in a secure back alley, where he pushed the boy against a wall. He placed his hands on either side of Izuku and leaned closer. The latter flinched and pressed his own hands on Kachan’s torso.

“I swear I didn’t do it on purpose! Anh~” 

Midoriya’s head jerked back as one of his nipples was now pinched between two fingers. His fingers clawed Kacchan skin and an alluring moan escaped his lips. 

“Deku…” Kacchan said in a hoarse voice. “Don’t you dare walk around like this ever again…” 

“It’s the first time it ever happened! I think…” Deku retorted. “And expect for you, no one else would care anyway!” 

“You never know what kind of perv’ goes around at night! A perv’ that would happily suck on these pink nipples!” 

That made Deku pause for a second. He raised one eyebrow and grinned at the blushing boy in front of him. 

“Aren’t you… talking about yourself here…?” he teased. “I’m still feeling your fingers touching my nipple…”

Bakugou jerked his hand off Deku’s chest and covered his mouth.

“S-shut up, shitty nerd!” 

Izuku chuckled under the hand and teasingly raised the hem of his shirt, revealing his bare chest. Kacchan’s eyes flinched; he yanked the shirt back down.

“Y-you little demon! Don’t you dare tempt me, or you’ll regret it!!” he shouted with shaky lips. 

He released Deku’s mouth and sprinted away with his shame. Deku watched him run away and laughed at how adorable that was. 

--

After the nipple incident, Bakugou avoided Midoriya for a few days. He couldn’t believe that he got seduced by the view of Deku’s chest through a freaking shirt and holed himself up in his room. 

‘I’ll wait for a bit, and all this madness will be gone for sure!’ He tried to convince himself. 

And as he was fighting his ‘demons’, Bakugou was called by Kirishima one day to go to the swimming pool. The fiery boy gladly accepted, feeling that it would be a good distraction from his thoughts. 

Unfortunately for him, Bakugou quickly learned that Izuku had been invited too, along with a lot of their classmates and friends. 

“Shit!” Kacchan cursed in despair, before heading to the changing room. 

He quickly got changed and rushed to the swimming pool, deciding to not meet Deku at all. The latter sighed at the obvious avoidance, but he knew it was probably best to let Kacchan deal with his angry feat alone. So he joined Todoroki-kun and Ida-kun for a short training session.

But as much as he tried, Bakugou’s eyes seemed inexorably attracted to Deku, and shifted in his direction of their own volition. He gritted his teeth at one point, as he noticed how touchy Todoroki was. Kacchan walked towards the group nonchalantly and challenged them for a race. 

“Are you sure it’s a good idea, Kacchan?” Deku asked.

“What, afraid of a little duel?” 

“No but…” 

“Great! Then come here!” 

Bakugou caught Deku’s wrist and pulled him to the side of the pool.

“You don’t have to use this kind of excuse, you know…” Deku said in a sigh. 

“Huh?! What are you…” Bakugou shouted. 

He swirled around in a sudden movement and slipped on the wet floor. 

“Kacchan!!” 

Izuku rushed forwards and managed to catch his impulsive boyfriend before he hit the ground. Bakugou laid there in shock, not daring to move as he could feel the soft skin of Deku’s chest under his face. 

“Are you okay Kacchan?” Izuku asked in worry. 

Katsuki raised his head and tried to resist, but after two seconds his eyes eventually dropped to Midoriya’s chest, where alluring nipples were pointing up. Bakugou gulped and met Deku’s eyes, then rapidly stood up before heading back inside in the locker room. 

Izuku followed him, a little worried, and found Bakugou in one of the shower booths, curled up in a corner. Deku knelt down and placed his hand on Bakugou’s shoulder.

“Kacchan…? Are you okay?”

“Go away, Deku… You don’t want to be in the same room as me right now…” 

“What do you mean?”

“I must be going crazy…”

Midoriya checked Bakugou’s body up and down and quickly noticed the bulge peeking through the front of his swimming trunks. His eyes widened, and his face turned a bright shade of red. 

“Oh… I- hum, there is nothing to be ashamed of, Kacchan! It’s just a natural reaction!” 

“Natural…? So it’s natural to get hard whenever I see your nipples…?” Bakugou asked in an annoyed voice. 

Deku’s blush grew even more vivid and he had to clear his throat to keep his voice from peeking up. 

“W-well, I mean… I guess so… I think it’s normal to get excited for the body of the person you like, right?” He said in an unsure voice. 

Katsuki glanced up and frowned. “What bullshit are you talking about…?” he growled. “Then do YOU get hard whenever you see me?” 

Deku remained silent at the question, avoiding eye contact.

“Didn’t think so… There is something wrong with me, I tell you.”

“...I get hard too…” Izuku muttered under his breath. 

Katsuki’s head snapped right up, and he grabbed the freckled boy by his shoulders.

“Don’t lie! You’re way too pure for that!” 

His eyes pierced right through Deku, who whimpered in response, head lowered. Bakugou forced him to raise it back with his hand, and his fiery stare bore right into Deku. The latter wriggled and tried to escape Bakugou’s grip. 

“Don’t look at me like that… Ngh…” he begged, gripping on Kacchan’s wrist.

The latter frowned, perplexed, then quickly glanced down. 

“What the…” he said.

To his surprise, he saw that his cute Deku was having a hard-on for some reason. 

“Wait, why are you…?” he wondered, raising an eyebrow. 

Then he remembered what Izuku said and smirked. He purposely leaned forward and peered up at Deku with his most ardent stare, and brought another whimper from the boy. 

“Stop it, Kacchan!!” Deku cried out. 

He crawled against the other wall of the booth and tried to get up, but Bakugou stopped him and hugged him from behind. 

“Tell me what excites you…” he whispered in his ear. 

“...” Deku hesitated. “Your… eyes… I don’t why, but when you look at me with your intense stare, I… feel like I’m melting.” 

Bakugou sighed and tried to resist his urge to fuck Deku here and there. 

“Why do you have to be so cute…?” he said, pressed his forehead on Deku’s shoulder. 

The latter felt something hard pressed against his lower back and he squirmed. 

“W-we should go back to the group! They are going to wonder why we are taking so long…” 

“Let them…” Kacchan retorted. “Turn around, Deku.” 

“No… I-”

“Come on, we can’t go out like this…” 

“...”

Deku, unable to ignore the throb bulge in his own pants, obeyed and faced his boyfriend; and Bakugou quickly made him sit on his lap. Deku was now looking down on Kacchan, and his arousal grew more vivid as the spiky-haired boy peered up at him with hunger. 

Bakugou quickly lowered the two shorts and grabbed the two erected members with one hand. He grinned and started rubbing them up and down. The two boys’ breaths began to shorten with pleasure, and Deku arched his back against the wall behind him. 

Katsuki now had the target of his troubles right under his nose, and he groaned.

“You’re doing it on purpose, aren’t you…?” 

His tongue gently played with the pink nipples at first, then took the hardened tit in his mouth. He sucked on it hard, like a suction cup, and took his time to taste it. Deku moaned and pulled at Kacchan’s hair, but the stubborn boy wouldn’t budge. 

The hand holding their dicks was moving faster and faster, and each could feel their climax quickly approached. 

In the very last strokes, Bakugou suddenly bit on the nipple at his lips. Deku cried out and clawed at Bakugou’s back as he came to completion in a wave of spasms. Kacchan captured Deku’s lips; and they both came together in a muffled orgasm. 

As they sat apart after that, Katsuki’s eyes trailed on Deku’s chest and a proud smile appeared on his face. 

“Now that’s a look I like!” 

“Huh?” Deku asked. 

He looked at his chest and saw how swollen his nipples were; one even bore a bite mark around it. His face snapped back up and he hit Bakugou with his hand. 

“K-Kacchan!! I can’t go back there like that!!” 

Bakugou smirked and got up. He started walking back to the locker room, then turned his face back. 

“Not my fault if they are so appetizing…” 

He disappeared at the door, and Deku had to hurry to catch up with him. He grabbed his shirt and put it on, then sent a death stare at Kacchan. 

“Perv…” he whispered, before heading back to his friends. 

“Oi!” Katsuki protested with a frown. “You just wait, you little…” 

Kirishima came to meet Bakugou right at the door as he passed the threshold.

“Hey, you okay there buddy? Did you hurt yourself?” 

“Huh? Ah, no, I’m fine!” Kacchan said. “I just…”

His eyes followed Deku, who was clearly very aware of his stare; it made him grin.

“...felt like having a little snack all of a sudden.” 

The mere memory of Deku’s tit between his lips was enough to make Bakugou’s entire body tingle. He closed his eyes and sighed.