Work Text:
zuku buzzed with excitement as he heard the door open. He had been waiting all day for his boyfriend to come home with all the snacks he had requested. He looked in the mirror and smiled softly, running his hands down his ginormous belly. He was wearing an ill fitting button up shirt(very ill fitting, as the buttons were barely holding on)and a pair of black booty shorts that left nothing to the imagination. His thighs were huge and rubbed together when he walked, letting his ass jiggle behind him.
“Babe! I’m back!” he heard Katsuki call.
“Coming!” Izuku called back and headed for the living room.
Katsuki was taking the food out of the bags and setting it on the coffee table when Izuku stepped out. He looked up and smirked at the omega. “Well you look like you’re ready for some fun.”
“Kacchan I’ve been waiting all day for this…” Izuku moved to him and wrapped his plush arms around Katsuki’s neck. He kissed his cheek and grinned at him. “You got so much.”
“Yeah well, I figured you deserved a special night since you’ve been working so hard.” Katsuki set out a box of 40 nuggets and then moved to hold Izuku. He loved the way his arms barely fit around Izuku’s body anymore.
Izuku had been born quirkless, which was fine by Katsuki. At least now anyway. Being quirkless and an omega didn’t give him much in the way of hero work. Yet Izuku had managed to still get into working for an agency behind the scenes, helping his friends by spotting and getting information. After Katsuki had gone pro and started his own agency, he had been happy to bring Izuku in.
After Izuku had presented, the weight had started to pile on. He had always been a stress eater. His whole life he had been chubby(as omegas usually were)and as he got older, he only got wider. Katsuki often kicked himself for how he had treated him back then. The two couldn’t have been more different with Katsuki being a well toned alpha with an awesome quirk to boot. Around the end of high school was when Katsuki decided he didn’t want to be Izuku’s bully anymore. He had feelings for him and he wanted to court him. His first courting gift had been a three layer double chocolate cake. And he sat there and watched Izuku eat the whole thing.
And thus Izuku had piled on 200 pounds to his small frame. Katsuki couldn’t get enough of it.
“You’re such a good alpha, Kacchan.” Izuku moaned, gently nipping at Katsuki’s scent gland.
The alpha let out a small growl and moved to nip at Izuku’s. “Anything for my Deku. Why don’t we get started?”
Izuku grinned again and sat down on the couch. His ass was huge and nearly took up a whole part of it. Katsuki squeezed next to him and grabbed a container of fried rice. “Open up Deku…”
The omega is happy to oblige. He places his hands on both sides of his belly as Katsuki spoon feeds him his rice. He lets out small moans of pleasure as he chews and swallows, making his way through the container in no time.
Next up, Katsuki pulls out a giant bowl of Katsudon, Izuku’s favorite. Izuku chirps excitedly and lets his alpha continue to feed him. Izuku moans as the first bite explodes in his mouth. “Kacchan~ Its so yummy!”
Katsuki grins and holds another bite to his mouth. “Oh yeah?”
“Mmhm!” Izuku takes the next bite and purrs. “You spoil me.”
“I do, don’t I? I can’t help it. You’re such a good omega, Deku.” Katsuki teases and moves the fork away to place a kiss to Izuku’s lips. “You better eat everything tonight.”
Izuku chirps again and lets out another lews moan as another forkful passes his lips. “Anything for my alpha. My alpha takes such good care of me~”
Izuku could feel himself growing wet as Katsuki moved one hand to his belly. “Make you nice and full…you love it. You want to be bigger, don’t you?”
“Yes Kacchan. Want you to stuff me till I can’t move!”
Katsuki held another forkful up to his lips. “Thats what were gonna do Deku. You still have so much more food to eat.”
Izuku looked at the spread and licked his lips. He could do it, he knew he could. He could feel his shirt growing tighter with each bite. He eyed the extra large cup on the table and pointed. “Can I have that?”
“Already?” Katsuki set the half eaten bowl of Katsudon down and grabbed the cup. “Here you go…”
Izuku sucked at the straw and whimpered happily. Chocolate. The cool drink helped distend his belly even more and he heard a loud ‘pop’ as one of his buttons finally gave way. He glanced down and smirked and then looked over to Katsuki. The alpha’s face had gone very red.
Izuku brought the straw back to his lips and sucked, moaning and rubbing his belly as he felt it swell up even more. Another few buttons burst off and his belly and chest bounced out. “Oh…”
“Fuck Deku. Do you know what you do to me?” Katsuki moved to place his hands on Izuku’s chest. His nipples were red and puffy and he moaned as Katsuki gently ran his fingers over them.
“Kacchan~” Izuki whimpered. “They’re so sensitive…”
“Nice and full for me…they always get full when you stuff yourself.” Katsuki started to squeeze them. “But before we get to the good part…lets keep you going.”
He picked up the bowl and started to feed him again. They went through container of container of food. Before they knew it, Izuku had eaten his way through more than half of the table. He could feel his chest ache painfully and whimpered. “K-Kacchan…”
“Hold on, I’ll be right back.” Katsuki got up and walked into the kitchen, leaving Izuku by himself.
Izuku whimpered again and ran his hands along his belly. His cunt was pulsing with pleasure. He could feel slick coating his thighs. He reached underneath his belly and rubbed his chubby hands along his swollen folds. “K-Kacchan…Oh Kacchan…” He whined, waiting for the alpha to come back.
Katsuki returned moments later with a smirk. In his hand was a large container of heavy cream. Izuku looked at him through half lidded thighs and licked his lips again. Katsuki walked back over to him and sat down. “Lets finish this off the right way.” He opened the top and held it to Izuku’s lips.
The omega purred and started to guzzle down the heavy cream. Katsuki placed his free hand back on his belly and stood on his knees on the couch. His cock was hard and pressed into Izuku’s swelling belly. Izuku could feel it and he squirmed a little. The cream dribbled down his double chin, spilling onto his chest and once the cold liquid brushed over his nipples, they started leaking their own sweet milk.
“There it is.” Katsuki pulled the container away. “Look at what a mess you are.”
“Kacchan please…” He moved his hands to his plush chest and squeezed. “Milk me Kacchan.”
Katsuki was only to happy to oblige. He moved to straddle Izuku’s lap, which was a task on its own considering his belly covered so much of his thighs. He pulled his pants down, letting his cock free. He spread Izuku’s legs and lifted his belly so he could push into the omega’s pulsing cunt. He hooked his lips on his right nipple and began to suckle. His free hand went to his other nipple and he squeezed, milk gushing out and down his belly.
The omega cried out in pleasure as he was fucked and milked at the same time. “A-Alpha!”
Katsuki growled, pushing himself harder into him. He pulled away and looked at Izuku. “Fuck you’re so sexy. You’re so fuckin’ hot Deku. You’re so wet. You take my cock so well, even with all this in the way.” He grabbed his belly and jiggled it.
Izuku looked at him through tears of pleasure and whined. “I want your knot. Alpha give me your knot!”
“Oh you’re going to get it Izuku. Gonna fill you up even more with my cum. Give you my pups. And you’ll get even bigger, make even more milk.”
“Yes alpha!! Breed me!!” Izuku grabbed Katsuki’s sides, digging his nails into him. “Give me your pups! Make me bigger!”
“Fuck Deku…Fuck!” Katsuki gave a few more hard thrusts before spilling himself into Izuku.
“A-Alphaaaaa~” Izuku cried out, feeling Katsuki’s knot swell into him. The alpha let himself fall over his belly, panting heavily.
“Holy hell you’re so hot, Zuku…” he mumbled, moving to press their lips together.
Izuku smiled softly, returning the kiss. “I love you Kacchan.”
“I love you too, Zuku.”
Izuku leaned back, enjoying the feeling of his knot. He loved his life.