#dkbk #nsfw

Katsuki has selective mutism. Growing up, no one ever heard him speak aside from his parents, not even his boyfriend, Izuku, had that luxury. They've known each other since they were 4 and been dating 2 years now, but Katsuki remained silent.

While their friends had their unwanted concerns, Izuku didn't care at all that Katsuki wouldn't talk to him. After all, they didn't need words to communicate. They never did. Because at the end of the day, no one could understand their relationship better than them.

"Hey Kacchan, I'm home!" Izuku had just finished his patrol and had some spicy takeout bags in his hands. He heard two loud knocks on their coffee table in the living room. He followed the sound, finding Katsuki watching TV on the couch.

"Hey babe. How was work?"

Katsuki rolled his eyes and signed that Shitty Hair and Pikachu were getting on his nerves.

"They always get on your nerves."

Katsuki blew some air out of his nose and continued to explain that they wanted to do karaoke after patrol.

"Oh I see, were they trying to..."

He shook his head, signing that they just wanted to get drinks and the idiots would sing. But they should know by now Katsuki doesn't like closed spaces like that.

"Yeah they make you really anxious."

Katsuki nodded his head in agreement, further signing that it's

irritating how he has to constantly remind them about this type of shit.

"I know. I know. So did you guys do something else or..?"

He signed that they were dead set on going to that stupid karaoke bar, so he flipped them off and walked home.

"Babe, you should've texted me."

Katsuki shrugged his shoulders, signing that he didn't wanna be a bother.

"You never bother me." Izuku pulled him into a sweet kiss. "You want dinner? I got some mapo tofu from that place you like."

He shook his head as he pointed to his stomach.

"Okay. I'll put these away in the fridge for now. You want something while I'm in there?"

Katsuki pointed to his empty glass sitting on the coffee table.

"Water?"

He nodded his head and signed that he wanted lots of ice too.

"You got it, babe."

Izuku filled Katsuki's glass with ice water and he grabbed himself a beer from their fridge. He set both their drinks on the table as he sat back down on the couch. Then wrapped his arm around Katsuki's waist as they watched TV together for hours.

Deku decided to slide his hand down Katsuki's sweatpants to lightly squeeze his ass. He heard him suck his teeth and felt him write 'Really?' with his finger on Izuku’s thigh.

"I can't help myself around Kacchan." He smirked, squeezing his ass a little harder.

"Do you wanna?"

Katsuki nodded his head, but quickly signed they're not fucking on the couch.

"Fine by me." Izuku lifted his boyfriend up and carried him to their bedroom. He dropped Katsuki on their bed, while he grabbed a bottle of lube from their dresser.

Katsuki quickly undressed and smiled as he watched Izuku crawl towards him with a look of pure lust in his eyes.

"Kacchan is so beautiful." He cooed as he spread his legs to kiss the inside of his thighs. He moved to Katsuki’s cute little hole, swiping it with his tongue.

Katsuki gasped, heavily panting as he watched Izuku eat him out. He twitched and curled his toes when Izuku slid his tongue inside him, along with two of his thick scarred fingers. The lube was ice cold against his hot skin, he could feel it coat every inch of his walls.

"Kacchan is perfect, isn't he?"

Katsuki nodded his head, rocking his hips against Izuku's fingers. He let out another silent cry when Izuku curled them against his prostate.

"I wish you could see how beautiful you look right now, baby." Izuku continued to finger

Katsuki as he moved up the bed to suck on his nipple. Katsuki started to pant, reaching out to grab a fistful Izuku’s bouncing, green curls. Izuku was making him feel so good that he couldn't even think straight, especially when he added another finger.

Katsuki lifted his hips up a bit as he hissed at the burning stretch of his rim.

"You okay, baby?" Izuku popped off his chest to look at him. "Pull my hair once for no. Two for yes."

Katsuki pulled his hair twice. He didn't want him to stop. Not now. Not ever.

"Good boy."

Izuku started to kiss up his neck and shoulders until Katsuki turned his head to connect their lips in a slow, wet kiss.

"Are you ready?" He whispered against his lips. Katsuki tugged on his hair twice again as another soft sigh escaped him. "Good. Let me go, Kacchan."

Once Katsuki released the grip on his curls, he slowly pulled his fingers out of his puffy hole to pour more lube on his dick. He aligned himself as he put Katsuki's legs on his shoulders, then pushed his cock in until he was flush with his ass. Katsuki grip the sheets beneath

him, shutting his eyes as tears appeared in the corners of them. He tossed his head back on the pillow panting and gasping with every second.

"You're so tight, baby." Izuku moaned, thrusting slow and deep. "You feel so good. Fuck, Kacchan..."

He squeezed his hips harder as he

gradually pounded into him. Fucking him deeper and deeper. He knew Katsuki loved to feel every inch of him. He bent down to steal his lips in another kiss, switching up the angle of his thrusts to hit his prostate.

"Kacchan, fuck, Kacchan.."

"..Aaahn...De...ku..."

Izuku immediately stopped moving when he heard Katsuki moan. He looked up at him confused, until he just processed what he said. He slapped his hands over his mouth, wide-eyed and embarrassed.

"Kacchan..." Izuku's eyes immediately welling up tears. "Did you just say my name?"

Katsuki nodded, even more shocked than Izuku. He didn’t even realize his name slipped past his lips.

"Can...Is it okay...if you say it again?" He sniffed. "Please?"

Katsuki started to tear up as well as he nodded. Izuku thrusted into him, regaining his pace.

"Nngh...De...ku.." Katsuki's voice was so raspy and deep. It was so handsome. Izuku wanted to keep hearing him. "...Ah...mmgh..."

"You're so perfect." Deku whimpered, burying his face into Katsuki’s shoulder. "I love your voice..."

They rocked against each other harder

than ever before, chasing their releases.

"De...kuu!" Katsuki cried as he came first, his cock shooting hot cum all over his chest and stomach. Izuku quickly followed, his cock throbbing inside his walls as he filled his hole with his cum.

They kissed and moaned into

each other's mouths, continuing to rock against each other as they rode their orgasms together. Izuku pulled out and fell on top of him with tears rolling down his face. Katsuki wiped his tears away with his thumb, kissing his sweaty forehead.

"I'm sorry...I just...I didn’t expect you to say my name..."

Katsuki signed that he didn't expect to say it either. It kind of just happened.

"I love your voice, Kacchan."

Katsuki lets out a silent laugh and signs if he says so.

"I didn't expect it to be so deep.."

Izuku giggled against Katsuki's chest. "It suits you perfectly."

"De...ku.." Katsuki whispered. "Deku..."

"Kacchan." Izuku smiled at him before giving him a kiss on his lips. "I love you, Kacchan."

Katsuki signed that he loved him too. "Deku."

END