Blue Dandelions

Come on, you know you like little girls | katsushio | Massive Trigger Warning

Summary:

Katsuki didn't consider himself a bad person, he tried his best to control his anger and he was a fucking hero for god's sake but Izuku always seemed to bring out the worst he had to offer. No matter the age, Izuku Midoriya was Katsuki's weak point.

Notes:

Please read all the tags!!!
I just have a lot of trauma and no therapy money.

Katsuki didn't know whose bright idea it had been to leave an omega under his supervision, not with the rut coming any day and likely to be ten times worse from overuse of suppressors.

Bakugou looked at the 5 year old boy who was sitting on his lap. Izuku, who had been hit by a quirk. Izuku who didn't stop crying until he was in his Kacchan's lap. Izuku, the omega he's wanted since he learned what an alpha and an omega was. Izuku who looked like he would break at any moment if Katsuki held on too tight, with his tiny, skinny body. Izuku with his big doe green eyes, round freckled cheeks and his sweet smell now tinged with milk from being such a young omega. Not mature enough yet.

Katsuki felt his gum ache, his canines wanting to come out. Just one bite. Taking Izuku while no one else had him, marking him as his. Sink your teeth into the exposed gland, so vulnerable, so close, it would be so easy to just hold the child in place and-

"Kacchan, you smell funny." The boy nervously tugged at the hem of his T-shirt. Katsuki still remembered Auntie Inko scolding Izuku for always having holes in his shirts from nervously tugging.

"Funny?" Bakugou arched an eyebrow in question.

"Y-yes... Funny like... Hm..." Izuku fidgeted nervously in his lap, Katsuki could feel the beginnings of an erection and the burn of excitement starting in his stomach. "Funny like caramel..."

Katsuki couldn't concentrate enough to answer Izuku. The boy kept moving in his lap, the sweet smell with a milky touch that seemed to call his name was concentrated below his nose. The need to fuck something, anything, was getting stronger and harder to control and Izuku- Ah, sweet little innocent Izuku, seemed to be calling his name. Katsuki didn't consider himself a bad person, he tried his best to control his anger and he was a fucking hero for god's sake but Izuku always seemed to bring out the worst he had to offer. No matter the age, Izuku Midoriya was Katsuki's weak point. And he was right there, totally helpless and oblivious in his lap, it wouldn't take much convincing and Katsuki would be so, so, so kind to such a small body.

"Kacchan? Kacchan!" Katsuki was snapped out of his thoughts by Izuku yelling his name. Round red cheeks, big doe-green eyes and- Oh God, Katsuki would be so gentle with him, prepare him so calmly, not force such a big thing on such a small body. Katsuki was a good person but Izuku Midoriya managed to transform him.

"Deku, do you want to play a game?"

"A game?" Izuku tilted his head in confusion.

"Yes, a game... An adult game, you're already big, right?" Katsuki could feel the smile wanting to creep in with Izuku's excited yes, the excitement burning and getting harder and harder to ignore. "You just need to take your clothes off and sit down."

Deku, always so obedient and ready to please Deku, took off his clothes with the biggest smile on his lips. Too eager to play with his Kacchan, his hero. Katsuki got up from the sofa to watch the boy, was Deku always so small?

"Now you put your feet up," Katsuki lifted the boy's legs up by the knee, feet propped up on the edge of the couch, leg spread wide enough for Bakugou to see the little pussy peeking out. Katsuki just needed to touch, even just a little bit; he extended his index finger to open the folds but was stopped by Izuku's hands quickly covering his intimacy.

"Mommy says I can't let people touch me here," muttered Izuku looking anywhere but Katsuki's face.

"But you can let the person you love play there, it's special," Katsuki put on his saddest face. "Don't you love Kacchan?"

"I love Kacchan but Mommy said-"

"Don't you love me, Zuku?" Katsuki almost felt bad with Izuki's lost and sad little face. Almost. "So we can't play." Katsuki pretended to get up to leave.

"NO!" Izuku grabbed him by the hand. "I love Kacchan, I didn't know about that rule." Had his mommy forgotten to tell him? Why didn't he know? Kacchan knew this rule that his mother hid, Kacchan was always so smart!

Katsuki didn't bother to answer the boy, he just took his small hands away and looked at his small prize. It was such a small thing, the hole was barely visible, the clit hidden by the little pink hood; he knew Izuku would be a pretty little thing. His mouth watered for a taste, just a taste of heaven. Katsuki parted Izuki's pussy lips, bringing his face closer to run his flattened tongue through the opening.

"Ka-Kacchan, I feel strange." Izuku tried to push Katsuki's head away with his small hands.

Katsuki felt like he was in paradise. The smell and taste seemed to last forever on his tongue, Izuku's pussy was hot and throbbing in a way that made Bakugou want to just bury himself and live there. Katsuki got down and flicked his tongue again, and again, and again and again, Izuku's complaints and attempts to pull away were ignored in the back of his mind. Katsuki ran his tongue under Izuku's clit, making the boy's hips tighten; began a soft suction on the clitoris as he passed his index finger through the entrance, Izuku twitched trying to escape the strange and overwhelming sensation. He felt like he wanted to pee and the burning in his lower abdomen was so uncomfortable, Kacchan was making his body feel weird.

"Kacchan, I want to pee." Izuku's complaint was ignored in favor of continuing the light sucking, Katsuki felt his cock rock hard, the knot wanting to come to life. "Ah! Ka-Kacchan!" The boy's body convulsed with the overwhelming feeling of his first orgasm. Katsuki continued running his tongue gently over Izuku's clit making the feeling seem to last forever.

Katsuki's index finger was already inside Izuku and it was so hot, so tight, Bakugou just wanted to feel it around his cock, his knot. Izuku's pussy would milk Katsuki's knot like a champ, but Izuku was so tiny and Bakugou would never dare hurt his sun. Katsuki added another finger as he looked at Izuku's tear-stained face, Deku was so pretty; the big red eyes from crying, the bitten lips and the flushed freckled cheeks. Katsuki licked the tears from Izuku's cheek, the salty taste did nothing to drive away the sweet taste of pussy that was still on his tongue. Izuku's glazed eyes tried to focus on Katsuki's face.

"Ka-Kacchan, please," Katsuki tried so, so, so much but Izuku, sweet little fucking Izuku, with his green eyes and angel face. Bakugou would put only the tip, it wouldn't hurt, Izuku could take it, he would take it. He was an omega, his omega.

Katsuki held his cock in one hand and used the other to spread Izuku's lips, he would only put the tip. It wouldn't hurt, he wouldn't hurt Izuku, he would never hurt Izuku. Katsuki only put his head in, the grip felt almost too much. Izuku's complaints hammering in the back of his mind, the shallow thrusts knocking all the air out of his lungs and the knot forming painfully without the necessary grip.

"Squeeze here, Zuku- Baby" Katsuki brought Izuku's small hands to his knot, the grip pulling a breathy moan from his lips. "Just a little more, Zuku. I'm almost there."

Katsuki kissed Izuku's wet eyes, hips swaying without being able to go very deep, Izuku's grip on his knot. Katsuki could feel the tightness in his balls.

"Zu- Baby, so perfect, Deku. The most perfect omega." Katsuki came and shivered as if he had been hit by an electrical discharge. The hand with a firm grip on his knot, milking, putting all of his cum inside Deku. Couldn't miss a drop. He held the tiny boy against his chest. It didn't matter anymore, no one could have Deku like he had. No one else would have the boy dripping his cum like he had. No matter the age, Izuku Midoriya would always belong to Katsuki Bakugou.

Notes:

I'm just mentally ill