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Karu closes his book and flops onto his back. Garu, that pathetic fool, messed around with their body so much that he fell asleep, leaving Karu in charge. Hmph! And with Human Slave No. 1 gone, too. Ordinarily if that happened, Karu would go sneak into the kitchen and nick some of whatever Yakumo was making. But the human slave took Yakumo along.
He took Blade, too, which means there’s not much to do. The human knight isn’t here, and neither is Red Hair. Both of them are willing to spar if Karu wants to, but they’re busy elsewhere. So he’s stuck here with nothing interesting to keep him occupied. Not to mention it’s already after dark, which means anyone home is settling down for the evening.
In theory, Karu could go bother the priest. He’s here, and he never seems to mind reading together. The thought doesn’t excite Karu any more than his other ideas—sneak food out of the kitchen anyway, even though it’s one-tenth as good as Yakumo’s; roughhouse with the vampire’s weird pets; egg the incubus into doing something interesting; or prowl around in search of Master Kuya, even though he said not to disturb him.
Karu huffs and looks around the room in hopes something will catch his eye. His gaze lands on the box on the dresser. Huh, he’d forgotten about that. Human Slave No. 1 left him a gift too. He scowls. It’s probably something similar to Garu’s, which brings Karu back to thinking about how annoying it is that he’s asleep.
Well, fine. He can at least see what’s in the present. He rolls off the bed and grabs the box, already tearing into it before he reaches the bed. He tosses it onto the mattress and plunks down next to it before lifting the lid.
Inside is a…tube? He turns it around in his hands and sees the opening. It looks like that soft little place the human slave is so fond of. Intrigued, Karu pulls out the note that was underneath it.
“Mighty Karu, here’s a little something to help you train.
Use it well, and you’ll come out on top in no time.”
Human Slave No. 1 underlined some key words and signed the note with a flourish. Karu hmphs again. He definitely doesn’t need training! Who does he think he is, anyway? Karu glares at the item, crossing his arms.
But an image of the human knight pops into his head. He’s always saying that proper training makes one stronger. And really, isn’t it a bit flattering that the human slave wants to help him in his quest? Why, if he improves, he’ll be conquering humanity in no time! Even his number one slave says so!
No time like the present. He turns the tube over and around, examining it from every angle. Eventually, he pokes a single finger into the puckered hole. A startled yip escapes when it feels as if it’s nibbling on his finger. Quickly, he withdraws.
But curiosity has hold of him, so he does it again, this time more cautiously. It feels…interesting. Soft, fleshy. He remembers that Human Slave No. 1 is good at making things like this. Karu softens a bit thinking about how pleased Garu was with his gift. He shakes his head to clear it. This is different!
Pulling his finger out, Karu searches for something to make it more slick. Ah, the lube Garu keeps in their bedside drawer. Karu pulls out the bottle, pleased to see Garu didn’t waste too much of it earlier. He pours a bit out and swipes his finger through it before testing out the tube again. This time, his digit slips easily inside.
The slight suction pulls on him, and he can feel the human slave’s essence inside. Adding his own makes the tube contract and relax slightly in little ripples. If it’s this nice just on his finger, imagine how much better it could feel…
Glancing over to make sure the door is still latched, he strips off his clothes and underpants then lies back on the bed. His heart hammers with growing excitement, and his gut tightens and releases. He pours some of the lube onto his palm and makes a fist to spread it over his whole hand. He clenches the muscles in his arm to stop the slight trembling as he reaches down to loosely grip his semi-hard cock.
Exhaling, he strokes lazily, coating himself with the lube. After a quick glance around without spotting anything available to wipe his hand, he smears the excess on the bedsheet. Garu will likely be annoyed about it later, but Karu doesn’t concern himself with it now.
He parts his lips and runs his tongue over his sharp canines. Picking up the tube again, he brushes the opening against the tip of his erection. A sigh of satisfaction escapes his parted lips. Not bad. He eases the sheath down so it envelopes the entire head, pausing at the dizzying sensation it produces.
Might as well get on with it. In one not-so-smooth motion, he thrusts all the way inside it and then has to hold back a gasp. Is this what it feels like? He’s already panting and straining, even though he hasn’t started moving. Human Slave No. 1 definitely did something to it! He must have! Otherwise, why would Karu already be feeling his essence surging?
A moment later, he stops caring because the sensations cause his mind to go nearly blank. His essence bursts like a bubble, racing through him at lightning speed. He cums so hard he sees flickering lights behind his closed eyelids. Panting, he lets his arm drop to the bed beside him. With nothing holding it, the tube slides off his cock and hits the bed between his legs.
It takes several minutes before Karu’s heart rate returns to normal and the dizziness clears. He half sits, propping himself on his elbows and glaring at the tube as though it has committed a grave offense. Perhaps it has, given who left it for him.
Human Slave No. 1 has definitely been holding out on explaining things to him, that’s for sure. He obviously did not want Karu to become aware of those mind-blowing sensations. Karu scowls harder.
But on balance, he thinks there may be something to what the human slave said about “training.” He clearly has considerably more practice, or he wouldn’t be able to make Karu—ahem. No sense in thinking about that right now. He needs to focus on how to use this tool to become more powerful, thus conquering the human slave with his skill.
Cautiously, he applies another small amount of lube. When he tests the opening with the pad of his index finger, he can still feel the essence charge inside. The tingling sensation travels all the way to his dick, already beginning to fill again. He palms himself, trying to stay at a leisurely pace rather than jump straight into things. When he’s at full mast, he eases the tube back onto himself, slower this time.
The surge of essence is somewhat more manageable than the first round. Karu has time to move the tube up and down a few times before he feels the pressure rising. Quickly, he pulls the tube off, letting his own essence levels drop slightly and his pulse slow down.
Licking his lips, he tries again, sliding inside the soft but tight opening in the tube. It’s flexible, so he applies a little squeeze and nearly yelps with the sudden intense pleasure. Taking a few deep breaths, he lets up on the tube and simply raises and lowers it. It feels incredible, much better than just his hand.
He feels the undulating waves of essence and the building ache below his navel, along with the roiling in his balls. Like before, he stops before he can get any closer to finishing. It’s a near miss, but the sensations fade a bit leaving a pleasant prickle along his skin. He lets his head fall back against the pillow, allowing the feeling to pass.
Perspiration beads along his hairline, a droplet running down his temple. He slides his thumb and fingers over the tube, exploring the texture of the outside. Much as he hates to admit it, the human slave is quite good at crafting this kind of toy. Karu inhales deeply, holding his breath for a few seconds as he re-enters the tunnel with his reddened cock.
This time, he has more of an idea what to expect. He raises and lowers his hips, experimenting with thrusting while keeping his hand steady. In no time, he’s panting open-mouthed, essence making his skin prickle with heat. Sweat pools beneath his lower back as the feeling of wanting to release intensifies.
At the right moment, Karu uses all his willpower to stop his motion. He leaves the tube in place this time, and it takes less effort to calm himself in between trials. He’s about to start up again when an image pops into his mind: Human Slave No. 1, on his hands and knees, with Karu behind him. The position is familiar, if reversed from how they’ve always done it. Karu’s muscles tense with excitement.
Feeling he could burst again any moment if he isn’t careful, he withdraws the tube. He looks around the room, trying to puzzle out a way to emulate the vision in his mind. An idea occurs to him, and he rolls off the bed, the toy still in his hand.
Lifting the edge of the mattress, he tucks the tube underneath it and lets go. To test it, he gives a light tug, but the heavy bed holds it fast. Perfect. He rises onto his knees and slots himself against the tube’s entrance, grinning with delight on discovering it’s the perfect height.
He’s almost too excited to bear it, but he keeps his breathing controlled as he slips his painfully hard cock inside the opening. The essence charge hits again, and he has to clench his teeth to bear it. Leaning forward, he grips the bedcovers and gives a single thrust. A bolt of need zings right through him.
Eyes closed, he begins to rock, imagining that the tube isn’t merely a lifelike toy but the human slave’s body. He succumbs to the fantasy, picturing himself fucking him slowly at first and then gathering speed. He can almost hear the sounds the human slave would make, the same ones he’s made himself countless times when he’s been the one welcoming that hard thing into himself.
No longer able to stop either his hips or the desperate moans falling from his lips, Karu gives in. He thrusts until he feels his climax closing in, and this time he doesn’t pull away. Instead, he keeps moving, clutching at the sheets and gritting his teeth. His thoughts briefly drift to Human Slave No. 1, envisioning him teetering on the edge himself.
The dam bursts, and Karu spurts blast after blast of hot cum into the tube, his fingers curling against the mattress and his eyes squeezed shut. He can’t stop shaking with a mix of intense pleasure and relief.
As soon as he’s finished ejaculating, he pulls out and slumps to the floor, gasping. It’s a while before his head clears enough to stand and remove the tube from beneath the mattress. Legs wobbling, he makes his way to the bath to clean up and wash the toy.
Just as he turns on the tap, Garu stirs. At least he had the sense to wait until Karu was finished. Karu can practically feel his eager energy, damn him.
Well? Didn’t I tell you Master gives the best presents?
Shut up, Karu responds.
Admit it, you had fun.
Ugh. Fine. It was…all right.
Karu knows Garu is grinning smugly.
Well, whatever. It was pretty good, for a first try. All Karu needs is a bit more training, and he’ll have the human slave eating out of his hand. He makes a mental note to get Garu to let him have their body on a schedule. Not because he enjoyed it, of course! After all, he can’t expect to conquer humanity without more training. A lot more.