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"I said to fucking crawl you stupid whore!"
A heavy combat boot knocked into the back of Deku's knee. He fell forward on his hands and knees. The hard wood floor cold against his skin. He wasn't allowed to look up but he could feel Kacchan's burning gaze on his nude body. He whimpered under the scrutiny. He was vulnerable, nothing hid him from the fully clothed man's predatory gaze. maybe he should have asked for the cock ring today. He moved forward an inch only to have a hand kicked out from under him.
He crashed face first against the floor and a hot hand came down to entangle his hair. "Goddamn bitch can't follow a simple order. How hard is it to just fucking crawl?!" Kacchan's costume scrapped harshly into his flesh. The grenades on his belt were sure to leave an imprint.
Deku whined a little and snapped his thighs together. He couldn't cum yet! He didn't have permission!
He was released and set his eyes on the box across the room. He just had to make it there and he'd get a reward. He could do this!
He made it half way when the vibrator in his ass roared to life at the highest setting. Those pulsations snug against his prostate made him collapse ass up gasping around his moans.
A boot came down to press him flat against the floor. He let out a high pitched keen when his leaking cock suddenly had friction against the floor. "Oi! You better not have cum!" He shook his head, he couldn't say anything, it wasn't a true question. "Are you lying?"
"No!" He gasped, the damn vibrator was still going. "Ah! No master!" He'd just barely managed to force the building heat down.
The weight on his back lifted, only for the treads of the boot to press down into his balls. Deku's eyes went wide, he cried out and writhed. Kacchan was probably sneering down at him, "Heh, you look like some disgusting bug trying to squirm away."
It was getting to be too much. He sobbed and sniffled begging his orgasm to stay back! But thankfully Kacchan was merciful and eased off his balls. His breath tickled Deku's ear, "Color, nerd?"
"Ye- yellow." He whispered hoarsely back. The vibrator immediately switched to lower setting, nothing more than a pleasant hum.
Kacchan's hot body moved away, letting Deku get back up on all fours. A quirked up smack came down hard on his ass. "Well get moving loser!"
Deku's body trembled and threatened to give out but slowly he crawled forward.
"Disgusting" Kacchan snorted from somewhere nearby. "Nothing but a useless whore slathering all over my floor like a bitch in heat."
Deku moaned in agreement. Each insult thrown his way sent shocks of pleasure through his body straight to his dick. He bit hard on his lip to keep from getting louder. He was almost to the box!
"What a good little fucking whore."
Deku's hand landed on the box and the vibrator was ripped from his ass. But it was soon replaced by something thicker and hotter. Kacchan thrust his length in all one go. "Cum on my dick slut!"
Deku was more than ready to comply. He arched back, head thrown back as his world went white from pleasure. He was only distantly aware of Kacchan cursing about his tight fat ass and the warmth of the other man's release deep inside him.
He was crushed against Kacchan in a tight embrace. Hands pet his hair and rubbed at his abused skin. "So good. You did so good for me Izuku."
Deku preened at the praise and sunk further into the warm fuzzy feeling all around him. He heard Kacchan chuckle as he hoisted him onto their bed. A water bottle was pressed against his lips, "Drink a little for me baby. That's it, good boy." Deku followed the simple commands as Kacchan doted on him. A warm washcloth was dragged between his thighs, gently cleaning away the mess.
Soon he was making grabby hands at Kacchan. They fell back on the bed wrapped around each other. Gentle kisses were exchanged and Kacchan hummed for Deku lulling the green hero to sleep. In the morning Deku would find out his reward wasn't the new Limited Edition Anniversary All Might figure but an engagement ring.
/**/
One month later at a party Kirishima asks a tipsy Bakugo how he should propose to Mina. "I want to make it special you know?"
"Yeah, just do what I did."
"Ask after an All Might documentary? Bro All Might's cool and all by Mina and I aren't half the fan boys you and your Fiance are."
"Psh! That's just the story for his mom's sake and the media."
"I'm going regret this but...how'd you really ask?"
"Shoved a vibrator in that ass and made him crawl naked across the floor to the box. Then I gave him the ring in the morning."
A scandalized scream of "KACCHAN!" came from a few feet away.