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They realize they have been kissing for a while now. It's raining. It's pouring down hard. The light is dim, the hallways are quiet. And they can hear each other's breath.
Mori was told to wake Master up his slumber. But to his surprise, Master was already awake. He's sipping his lukewarm coffee, facing the window with a bunch of files on his lap. His shirt unbuttoned from top to bottom even though it's almost freezing out in the hallway. To the door knob's movement, he looked at Mori, after a delay he drew a smile, telling the Berserker to sit beside him on the corner of his bed.
And after exchanging a few sentences, everything went blur. They've dwell in this kiss long enough for Mori to only realize that now he could feel his tongue now tastes like coffee. The Master finally push his shoulders a little to break the kiss and take a breath. His lips parting and his cheeks reddish mess, his chin wet with saliva—and Mori wipes it with his thumb. Maybe it was because he dozed off midway during their conversation to stare at the Master's cleavage. Or it was because suddenly Master inched closer to his side seeking warmth. He couldn't careless of what have brought him to this situation, he could only tell that Master is in front of him defenseless—or it's more like he lowered his defense. Mori feels something burning in his body, the need to feast on Master's smaller body, the urge to sink his teeth into his neck—every consequences of seducing this Berserker, Master actually knew that from the start.
And they are touching each other's thighs. Feeling each other's fingers running through the clothed skin. Now each kisses they steal once every seconds feel like a burn. Mori developed a habit in this short period of time; biting Master's lips after every kiss. It'd bleed, of course, and that makes Master looks even more alluring to him. Until those slender fingers slide to his crotch, that's when something within him finally snapped. He could see a wet spot between Master's legs already. He could hear the needy breaths, the low moans between the rain. He reciprocates it by groping Master's ass cheek, moving his index finger up and down between them once he found the line.
"I ain't your first, huh?"
"Well... My first male Servant, I guess," his fingers slide to Mori's waist, to his back.
Mori looks slightly disappointed hearing that. His expression deflated. He's normally aware of the fact that the man in front of him is everyone's Master, he's humanity's last Master. But now that he heard it coming from the person directly, that he is not exclusively his, the desire to mark Master grows even bigger.
His large hand abruptly taking off Master's pants. Pulling the smaller man closer to bite his neck. Master gasped from pain, he claws on Mori's back to endure it, biting on the cloth covering Mori's shoulder. With a swift movement he's now on Mori's lap, with the Berserker licking on his wound, almost as if he's drinking the blood out of him.
"Mori..," he shivers, "hey, are you mad that you're not my first?"
"Yeah." He jerks off Master's trembling dick almost immediately, with uneven rushed movements, he's facing down to wet it with his drool. He puts the Master down and muffles his mouth with the underwear he found near him. Then positioned himself to take it inside his mouth. Master holds onto Mori's hair while his legs wrap themselves around Mori's neck—they shake everytime Mori licks the tip or his asshole.
With his dick tense dripping with precum, he couldn't help but beg so Mori would just finish him already. Though, since he cannot speak, he could only rock his hip up and down, closing its distance to Mori's mouth each time the man teases him. And, well, it is effective. Mori could feel his pants getting tighter. Now he should really focus on preparing the Master first—yes, yes, he is angry. But he respects his lord more than anything else, he wouldn't want to rip his hole apart and wound it. As sexy as it'd look for him, this is still his precious Master.
"Fuck, Master, calm down a bit, will ya? I'll fuck you good, just be patient."
Patience is not a word he should be using, remembering how bad his temper is. But right now his Master looks even more desperate than he is. The thought of ravaging this body—figuratively—and forcing lustful cries to come out of his mouth is giving him a sense of ecstasy, and it is a mere image of his mind for now. What comes later could make him worse or better, this is regarding any viable acts for within him is a danger.
Within him is a clutching thirst. Mori takes Master's dick into his mouth, trying to not graze it with his unnecessarily sharp teeth. The hip vibrates harder to every suck, to every rolls of his tongue, slender hands clutching even tighter to Mori's red locks as he desperately gasps for air since his mouth is stuffed shut. The warmth—no,—Mori's mouth is burning hot. The cold outside piercing his shoulders and hardened nipples. Yet he couldn't feel them properly.
With a purposeful pop, Mori lets go of Master's before he could climax. Just, not yet. Now he shifted to his hole. His puckered hole covered in excessive precum and Mori's saliva. His thumb easily slides into it, rubbing the sides near the entrance, causing Master's body to jerk uncontrollably because he was close. But, not yet, not just yet. Master's hands moved to his sides, grabbing onto the bedsheet.
"Have a lotion I can use?" He remembers this at least. Master answers by glancing at the desk where he put his coffee on. A proper lube. With few drops leaking from the cap, he must've use this regularly. Maybe one would assume he has an onahole lying around somewhere, Mori doesn't pay attention to these details though. He cares enough to just get the lube and loosen Master's hole with one and two fingers.
One and two fingers will be nothing. As he revealed his cock, it's basically a huge mass of meat. Master isn't sane enough to realize how much of a size change he'd experience, as he keeps on grinding his own balls onto Mori's dick. Stroking the shaft of it with his crotch, trying to invite the man to visit him. As Mori pours the lube onto his thing, Master keeps on grinding, it's as if he wants to help the Berserker to spread the lube around. This turns Mori on even further.
And for the main course, they fuck. Mori fucks him good, as he promised. After inserting his tip, he rocks his hip slow for one and two light thrusts. Taking the wet dirtied cloth from Master's mouth, allowing the smaller man to cry out a moan, a groan upon feeling the head of Mori's cock inside of him, like it's splitting him apart.
Just before Mori could thrust further, he speaks in trembling voice, "Would- Would this fit, Mori—I mean, I've never had this... Size.."
Mori laughs as a response, his laugh rasp and loud, "Dunno! I've never fuck you, how would I know?!" His teethy grin complementing his eyes, gaze burning hole to Master's poor pitiful face, "You'll get used to it, Master. You'd never want anyone smaller than mine now."
After a nod from his Master he thrusts quickly until the hole swallows his whole. Knocked back, Master's eyes rolled back, his mouth wide open letting out a yelp. His hole tighten, his dick vomitting cum to Mori's stomach, his brain fried, he couldn't form any complains or compliments. Mori, upon feeling the warmth and the suffocating thightness of this alley, hasn't been feeling better either. He rushed to move, lifting Master's hip with his palm and thrusts roughly. The lewd slapping sounds waking Master up from his momentary black out and causing him to moan.
"Mo-Aa! Ah! S-slower...!"
The man didn't oblige, he is in a state where he couldn't hear a thing but his own raging mind. Master cums a few times more. One hand limp, one other holding onto Mori's fore arm, nails digging through his clothes. Mori doesn't speak much. All he does are grunting, biting, groaning, sometimes roughly kissing—no, it's closer to shoving his tongue to explore Master's mouth instead of actually kissing.
He is the Oni Musashi. His title didn't drop even on bed. Master expected this, but he exceeded the expectation. Won't be too sure if Master actually remember about his expectations before this experience. He is nearly blacking out again, his dick aggressively sensitive to every touch this man gives him. His shoulder trembles under is consciousness. He could feel he is breaking apart but isn't sure which part is breaking. He came who knows how many times but Mori is not slowing down. All he could focus on is now the ravaging pleasure violating his hole and the man now nibbling on his nipple, sucking on it until it's red. Leaving deep red brownish kiss marks near his chest and clavicles, biting more wound on his neck and shoulders. He doesn't mind anymore. He doesn't mind being a cocksleeve. Not minding how Mori moves like a beast, not minding how long this would last. He can moan Mori's name until his throat sore and his mouth dry, and it's no changing the ecstasy his brain is experiencing. It is but a taste of a beast.
"Close... I'm close, ready your insides, Master," Mori yells a whisper to his ear. Finally, finally. His eyes snap open when he feels a surge of hot wave filling up his stomach, making him cough and gasp during the process. His dick, again, ejaculating like crazy.
Mori pulls out his thing rather slowly this time, he's back to reality. He has no regret knocking out Master with his load though, as now he could properly see the Master's face. Eyes pleading, arms reaching, "Hug me, Mori... Come here."
He oblige. He bends down and scoops Master's limp body into his arms, resting the smaller man on his lap, caressing his cheek. He smiles proudly and release a chuckle, "My bad, Master. I'll go slower next time, 'kay?"
Master shakes his head, he sighs. Closing his eyes, eyebrows furrowing, and burying his face to Mori's chest, "No need. Just, let me sleep like this to repay me."
Not even a minute in, he's snoring already. Mori laughs a bit. Before then he remember; wasn't he supposed to wake him up or something?