For the first time in his short, peculiar life, Deku saw Kacchan for what he was.

Selfish.

As he chased his release against the pillow Kacchan had so thoughtfully tossed to him, Deku grunted and strained. He could feel the piss and cum sloshing inside his abdomen with every useless thrust. The glorious stretch of his hole dwindled, conforming instead to the jeweled plug that held everything of Kacchan's in.

All the while, Kacchan watched, amused, stroking his softening cock because his refractory period was complete shit.

Kacchan had made good on his promise to keep Deku full. Sex toys, dog toys, random objects, it didn't matter, as long as it kept Kacchan's piss and cum 'where it belonged'.

He had yet to return to work, so he filled his time with filling Deku.

At first, he didn't mind. Being the object of Kacchan's attention was exhilarating. Being used was thrilling. Deku spent every second of the past eleven days eagerly fulfilling every one of Kacchan's fantasies.

For the past eleven days, everything was about Kacchan. Before, that had been fine. It was his purpose after all, but with every passing moment Deku's need grew.

His cock hung neglected. His knot ached. He whimpered as it wept, leaving thick lines of pre on the pillow below him. Like lines on a prison cell marking the days, every stain on this pillow marked another painful denial of release.

And it was endless.

The burn in his bulging knot was growing unbearable. This all-consuming rut was driving him mad.

He needed a hole.

He needed to breed.

He needed to fuck something and Kacchan just didn't (or wouldn't) understand.

Not like he could fucking speak.

No.

Kacchan took that away too.

He took and took and took….but never would he take.

And that was about to change.

Deku eyed that breedable waist. Imagined wrapping his paws around him, locking his dewclaws into that fair skin and taking from him.

For once in his life, he wanted something MORE than Kacchan's happiness.

He wanted to fuck him.

To mount him.

To lock his knot deep in Kacchan's gorgeous hole and pump him so full of pups he couldn't think past the stretch.

This pillow would burn.

He bit down on the pillow and shook viciously, the fabric ripping like paper between his teeth. Feathers went everywhere and, just as he expected, Kacchan was on him, yelling about something that didn't matter. But that was fine.

In fact, it was more than fine.

He would make Kacchan forget all about the pillow.

Deku dropped the pillow's ragged remains, allowing Kacchan to pull it away from him, exposing his angry, neglected cock to the air. It pulsed. It throbbed.

It needed.

More desperately than anything he'd ever felt.

And he'd be damned if he'd spend another evening licking it back into its sheath.

Deku lept at Katsuki, whose pants were still around his ankles and to his pleasure, the blond tripped.

The sound he made on his way to the floor was glorious. A scared, undignified yelp. It was perfect.

Deku knew his dick was doing his thinking for him but could he be blamed?

He couldn't remember what it felt like to cum. His balls hung heavy and sensitive between his fuzzy legs and he couldn't wait to share everything in them with Kacchan's insides.

Deku chuffed, frustrated at the blond's struggling.

"Fuck! Dek- What the f-" Kacchan began but the moment Deku's claws sunk in above his hip bones his eyes grew wide and his scent changed from arousal to panic.

He wanted to calm him, to tell him not to worry, that this would all be over soon, but perhaps Kacchan didn't deserve that.

In this position, it became clear to him that Kacchan had been so very wrong. How had he not seen it before?

It was Kacchan who was made for this and Deku would be the one to show him.

Deku licked a wide stripe across Kacchan's lower back, eyes rolling back at the delicious sweetness of his skin.

"Deku! Stop! What the fuck!?" Kacchan was thrashing now and had Deku's lips worked like his human pair, he would have smirked.

'No…' Deku thought and began to rut between the hero's plush cheeks, beads of cooling precum slicking the way.

Kacchan shivered, whispering pathetic threats as Deku continued to bathe and nibble at his skin. Deku refused to be a selfish lover and felt a burst of pride when the hero released a bitten-off moan.

"Fuggin hate you," Kacchan growled, though his words turned quickly to a hiss when Deku nipped him a little harder in response.

He didn't like it when Kacchan lied. He could taste Kacchan's truth all over his skin, could smell it dripping from every pore across his body.

Arousal seeped off him in waves, making his sweat sweeter, his breathing shallower. He wished he could see Kacchan's face. Would his eyes be glassy, pupils blown wide with want?

A want that was directed at him?

Kacchan shifted his weight, the movement feeling suspiciously close to grinding back against Deku's cock. At first Deku thought he was imagining it, then he noticed the deep blush spreading from the tips of Kacchan's ears down the back of his neck.

'Needy Kacchan…'Deku thought and let his instincts take over.

Finding Kacchan's hole wasn't as intuitive as he expected. Deku huffed, moving his hips impatiently, but the angle was strange.

If he'd had hands he could have aimed himself. He could have watched as Kacchan's ass accepted him, stretching wide to accommodate him. However, the moment his dick caught against Kacchan's rim, all human thought evaporated, replaced with the singular need to fuck.

He whined as he fucked shallowly, slowly and roughly working himself deeper. Kacchan grunted with every thrust, tiny sounds of pain morphing into impatient, needy whining, until finally, Deku was buried to the hilt.

Kacchan cursed, fingers curling against the floor. Then his hands were moving. Deku growled a warning, expecting him to push him away. He sunk his claws deeper then stopped, pleased.

Kacchan fumbled with the hem of his shirt, yanked it off, then tossed it blindly away from him. Deku's cock twitched as the blond shook, lowering his chest to the floor, his back arching in the most pleasing way.

Kacchan had just submitted to him.

"Move…fuckin- move. please. Move…"

The sound of his Kacchan begging was enough to spur him into action, he drew back painfully slow, pulling a pathetic whine from the blond's lips then slammed in, effectively knocking the wind from his lungs.

Katsuki spluttered, palms popping as he tried to catch his breath between Deku's frantic thrusts. He spread his legs a little wider and tried to match his speed but he was shaking, his blush having traveled nearly the length of his spine.

"Fu-uck De-eku! So-hah-so fuckin good."

His pride swelled in time with his knot and Kacchan jolted as it teased his twitching rim. Getting that inside him was going to be a pain, perhaps for both of them but he was determined to lock Kacchan up tight.

Deku picked up speed as every inch of the blond's skin began to heat up. Kacchan was quivering, panting open mouthed against the floor. He watched as a dangerous palm inched toward his dick, no doubt at full attention and weeping.

Deku's snarl startled him and he clenched his empty fist, looking close to protesting, instead he whimpered, moving his hand back in front of him. Deku rewarded him with a series of brutal thrusts, his knot so close to popping inside it left Kacchan gasping and clutching at his hair.

Desperation looked good on him. Kacchan would cum on his dick or he wouldn't cum at all, after all, payback was a vicious, fickle bitch.

The edge was nearing, an edge Deku had been skirting for nearly two weeks and he chased it with selfish ferocity. He slammed blindly into Kacchan, spreading him so wide his knot nearly sunk in completely, stretched obscenely around the thickest part before popping back out…

God, when he was through with him, Kacchan would be absolutely gaping… It made Deku's mouth water.

Kacchan was crying now, babbling incoherently as Deku lost his rhythm, turning to the intoxicating warmth of Kacchan's walls. They fluttered and flexed tighter around him, making him frantic. He knew Kacchan was bleeding from the claws buried deep in the soft skin at his hips as he held on for dear life but it didn't matter.

Without warning the blond slammed back against Deku and wailed. His entire body went rigid as the knot seated fully inside him. His walls clamped down like a vice drawing a feral noise from Deku.

He couldn't stop himself. He buried his teeth deep in Kacchan's back, eyes rolling as he painted his insides white.

The human writhed beneath him, Deku's knot equivalent to a fist locking them together. Deku growled as he tried to crawl away, to break the bond. It was a laughable attempt, as if Kacchan's heart wasn't fully committed to the action. So Deku helped him remember himself. He brought a heavy paw down on Kacchan's back, pressing him back to the floor…

…where he belonged.

Kacchan went easily and stilled with a trembling sigh. "Fuck," he breathed but it was more of a prayer than a curse.

Deku couldn't breathe, his mind having slammed to a halt, the orgasm working as a complete system reset. He continued to thoughtlessly grind, working his knot deeper until it pressed relentlessly against Kacchan's prostate.

He keened weakly, twitching with every move Deku made.

"Good- such a good boy, Deku. Good dog."