"Beg, slut!"
Mitsuri's pride warred with the burning need his blood had ignited. Tears streamed down her face, but her voice came out in a broken, desperate plea:
"P-please... Muzan... please fuck me... I can't take it anymore... I need you inside me!"
Satisfied, Muzan thrust in with one powerful stroke, burying half his 12x7inch length inside her tight, fluttering heat. Mitsuri screamed in ecstasy, her inner walls clenching violently around the invasion.
The stretch was overwhelming; painful yet mind-meltingly pleasurable. That demonic ridge dragged against her most sensitive spots with every inch.
He didn't give her time to adjust. He pulled back and slammed deeper, bottoming out against her cervix with a wet slap.
"So fucking tight," he growled, hips snapping in a brutal rhythm. "Your human cunt was made for this. Made to be ruined by me."
"No...I...Ahhhgnngh.."
"Yes.... theerre..".
Mitsuri's moans turned into incoherent sobs of pleasure. Her massive strength let her meet his thrusts, powerful legs squeezing his waist as she rode him back with surprising force.
Her breasts bounced wildly with every impact, and Muzan leaned down to bite and suck at them, leaving red marks that healed almost instantly thanks to his influence.
He fucked her against the wall like a man possessed; hard, deep, relentless. The sound of skin slapping skin mixed with her high-pitched cries and his low grunts.
Kpa!
Kpa!
Kpa!!
At one point he shifted forms slightly, growing small fleshy tendrils from his body that wrapped around her wrists, pinning them above her head, while another teased and pinched her clit in time with his pounding.
"You're mine now, little hashira," he hissed, angling his hips to hit that perfect spot inside her over and over. "Your love belongs to the King of Demons."
"I'm cummmmingg!!"
"Yes, come hard for your master."
"Muuzaannn!!!"
Mitsuri came hard the first time; walls spasming wildly around his cock as she squirted messily down his thighs, screaming his name. But Muzan didn't stop. He fucked her through it, drawing out the orgasm until she was shaking and oversensitive.
He pulled out only to flip her onto all fours on the cold stone floor. From behind, he re-entered her in one smooth thrust, gripping her wide hips hard enough to bruise as he railed her even deeper. One hand fisted her colorful braids, yanking her head back so he could growl filthy praise and degradation into her ear:
"Such a good little slut for me... taking demon cock so beautifully... Your comrades would be ashamed if they saw how eagerly you're creaming on me."
Mitsuri could only babble affirmations, lost in ecstasy.
"Yes... yes~! Harder... please... I'm yours...!"
Muzan used his blood arts to heighten every sensation, making her nerves sing with pleasure bordering on pain. He reached around to rub her clit furiously while his cock battered her cervix.
"Yooooooo...."
Another orgasm ripped through her, then another, each one stronger than the last until she was a drooling, quivering mess.
"Don't you dare pass out bitch." Muzan pulled her head up by her hair. "I'm not done with you."
Not content with just her pussy, he eventually pulled out and pressed the slick head against her tighter entrance. With careful demonic control, he worked his way into her ass, the stretch even more intense.
Mitsuri wailed in overwhelmed bliss as he filled both holes—first with his cock in her ass while fingers plunged into her pussy.
After a while of hammering her tight ass, Muzan pulled out. He focred his cock down her throat while using tendrils to double-penetrate her completely .
The temple filled with the wet symphony of their joining: gagging sounds as she deepthroated him, squelching from her overflowing cunt, and the constant slap of his hips against her plump ass.
Hours blurred.
Muzan changed positions fluidly; her riding him reverse cowgirl so he could watch her ass bounce, missionary with her legs pushed to her chest so he could stare into her tear-filled eyes while breeding her deep, even suspending her in the air with his strength for a standing fuck that made her feel weightless and utterly claimed.
He edged her mercilessly, bringing her to the brink again and again only to slow down, forcing her to beg louder each time.
"Tell me how much you love demonic cock," he'd demand, and she'd sob the words between moans, her usual cheerful innocence shattered into pure, submissive lust.
Finally, as dawn threatened in the distance, Muzan felt his own release building. He had her on her back once more, legs over his shoulders in a mating press. His thrusts became erratic, savage, the ridge on his cock swelling as he chased his peak.
"Cum with me," he ordered, voice rough with impending climax. "Milk my cock like the perfect whore you are."
"I'm cmmmminng! Yesssss!"
Mitsuri's final orgasm hit like a tsunami, her entire body vibrating like she was having a seizure, vision whiting out as she screamed in ecstasy. Her walls clamped down rhythmically, squirting hard around him while her muscles fluttered and squeezed with impossible strength.
"Akaaazaaaa!"
Muzan roared, burying himself to the hilt as he erupted. Thick, hot ropes of demonic cum flooded her womb, far more than any human could produce, overflowing and leaking out around his pulsing shaft. T
he sensation of being filled so completely triggered aftershocks that left Mitsuri twitching and whimpering for long minutes afterward.
He stayed inside her as they both came down, his hand gently, almost possessively, stroked her sweat-damp hair.
"Well done, my little Hashira," he purred, a rare note of satisfaction in his voice. "You've given me quite the entertainment."
Mitsuri could only manage a dazed, blissed-out smile, body limp and thoroughly ruined in the best possible way.
"Killing you would be a waste. You will be my pussy slave. With you by my side, I will annihilate the other Demon Slayers." Muzan said, drawing circles on her forehead.
"Yes, master."