Chapter Text
"M-Master… Master— ngh —Childe…!"
A finger enters his sopping hole, twisting and turning inside. The long calloused finger reaches his second entrance, poking around to see if it'll let him enter.
"Oho? Where did your confidence go, slut?" a husky voice asks, orange hair tickling the back of his head. Zhongli mewls, shaking his head adamantly.
"Can Master… fuck this slutty succubus? Can Master Childe fill me up so I can bear his children?" the succubus asks, trembling fingers gripping the muscled legs below him to anchor himself. He feels another finger enter his hole, causing Zhongli to throw his head back, hitting the human's shoulder.
"H- Haah! O-Oh Master…! Master is reaching my w-womb!"
Childe chuckles behind him, smirking against his neck. "If you're a good succubus, then Master Childe will fuck my succubus with his cock. Sounds good, hm?"
Zhongli nods pupils, blown. The energy he's gaining is much more than he expected, overflowing inside him and sending his damned soul back to Hell and here on this mortal plane.
As the fingers exit his hole, Zhongli vaguely wonders how they had gotten to this point.
"Since you're new, why don't you pick someone easy?"
His superior, Ningguang, suggests. She brings up a screen and taps on a purple icon, a list of names appearing on the screen. Zhongli floats near her, peeking from the sides.
The newbie hums, amber eyes looking through the list that his superior sent him. All the names looked boring, none of them standing out to him.
Even if he was a newcomer to the whole thing, Zhongli didn't want easy prey. Easy prey would probably serve little to no entertainment for him, and the energy that they may have would not be enough to satisfy his needs.
"They don't seem to be fun, Ningguang. Why not give me something much better?" Zhongli replies, opting to sit down on a chair made from bones and skulls of the dead. He crosses his unblemished legs and arms, tilting his head.
Ningguang lets out a sigh. "You do know that us succubi are in this industry because we need food, right? Entertainment is not what we're looking for."
"Well then, we're quite different in that aspect, Ningguang. Entertainment and my needs are both priorities," Zhongli smirks and licks his lips. His long tongue peeks from his red lips, wanting to be used and released from its prison.
Ningguang lets out another sigh and pulls out another list, this time less filled and only has two names. She slides the screen over to Zhongli, rolling her eyes.
"Here, S-ranked individuals. Choose your poison." Zhongli lets his eyes run over the two names, the first name catching his attention already.
He rubs his legs together, feeling slick leak a bit from his entrance. He taps on the name and bites his lips, stifling a moan as a picture of his target is displayed. Ningguang groans and face palms.
"Just go and get him. I don't want you to bust a nut in my office."
Zhongli grins, all teeth and hops off the chair, and walks towards the hallway. He gives Ningguang back her screen as he passes by her and opens the door.
The newcomer's superior looks at her screen and frowns. The picture shows a man with orange hair, eyes framed with round glasses, and wearing a blue polo and black skinny jeans; the epitome of innocence.
She shakes her head, a headache coming soon. The man looked familiar, but she can't seem to place a finger on it.
Maybe she should warn Zhongli, but then she takes it back. He'll have to learn.
Knowing that his target is a college student, Zhongli knows the best way into his target's pants.
And that is to be a professor in his target's college.
His target, Tartaglia or Childe, is known to be soft but outspoken, straight-As on his card, and pretty much an outstanding student overall. Innocent-looking. A virgin. Pure.
Perfect for Zhongli to deflower.
Enchanting the teachers and the director of the college was easy. As a human, he uses the name Zhongli instead of Morax, which was his real succubus name. Under no circumstances should he reveal his name, because it holds so much power.
Zhongli the succubus thus became Zhongli the history professor. A history professor who literally has the knowledge to teach the subject. He has been pouring over the books in Hell, and so far he was sure that he had read every book.
Now the history professor is strutting the hallway, tail, and long nails hidden away. He's wearing tight black skinny jeans that accentuated his bosom, white long-sleeved polo with cuffs, and shoes that are polished to the point that they can be used as a mirror. Zhongli is also wearing glasses that framed his eyes and made them look more doe and round.
Which was perfect, because he wanted to be a snack perfect for Childe to eat.
The succubus in disguise opens the classroom and walks on top of the platform, the heels of his shoes making a clicking sound on the wooden platform. He places down his clipboard and grabs a whiteboard marker.
Zhongli writes his name on the board and faces his class. "Good morning, students. I'll be your history teacher for the rest of your semester," he announces, back straight and arms relaxed.
The students look at him as if they have seen a god, eyes wide and mouth agape. Zhongli smiles, eyes searching for his Childe.
Aha, over there—?
Zhongli blinks, confused. In comparison to the other students' faces, Childe's expression is…
Uninterested .
Zhongli bites the inside of his mouth to prevent his smile from faltering. That'll be an interesting challenge.
While he’s writing something on the blackboard about the history of Aristotle, the marker in his hand slips from his grasp, landing onto the wooden platform. The sound it made was loud in such a quiet classroom where the sounds of birds chirping and pencils scratching on paper are the only things heard.
“Silly me, let me just pick that up…”
Zhongli crouches, making sure to present his ass perfectly for Childe. He had worn the tightest pants today and he made sure to slick back his hair perfectly so that his jaw would be accentuated.
As he crouches, someone from the class clears their throat and someone makes a choked noise. This makes their professor smirk. He grabs the marker and stands up again, adjusting his glasses.
Turning his head slightly and side glancing towards Childe’s direction, Zhongli sees the student diligently writing in his notes and not looking up. He makes a ‘tsk’ noise and goes back to writing.
“Mr. Tartaglia, you’ll be staying.”
Everyone who’s walking to the exit pauses and looks at the mentioned student. Some of his seatmates jab him in the sides, snickering but he waves them off and sits back down on his seat. Zhongli gathers the papers on his desk and looks up towards Childe.
As much as he wants to feed off from him, he doesn’t want to surprise him. He’ll take this as slow as possible to ease Childe into their relationship. He doesn’t want his prey to slip from his grasp.
“Mr. Tartaglia, come here and help me carry these to the faculty,” Zhongli calls out for his target, grabbing a stack of papers for Childe to carry. He stands and carries his bag behind him. Childe walks towards him and smiles.
He smiles for the first time they’ve met. And that’s been two weeks.
“Sure, professor. I’ll always be glad to help you.”
Childe grabs the stack of papers from his hands, their fingers brushing against each other. The succubus smiles back, but he stumbles back and hits the whiteboard.
W-What…
The slight brush of fingers… he couldn’t mistake it. That’s their only contact and Zhongli knows that he feeds from touching people. He expected a small amount of energy to be transferred and yet…
It’s too much already…!
The amount of energy he obtained made him feel woozy, his head spinning. Suddenly, his body feels—
“Professor? Are you okay? Do you need to go to the clinic?”
A warm hand touches his shoulder, leaving a scorching sensation. Zhongli winces, another burst of energy flowing into him. His body is becoming hotter, his disguise almost slipping. He can’t let him know his true nature yet.
Not yet. Not right now.
Before his target could touch him again, Zhongli stops him by raising a shaky hand in front of him, the other clutching his head. “I-I’m okay. Let me just… breathe for a while, okay?” he says, a bit wobbly. The amount of energy he got from his target was enough to last him a month, and he doesn’t get that much from a person only.
I would usually get just enough for a week from a person but from Childe…
Zhongli stands up, still swaying a bit. He can see Childe’s hands hovering around, but not touching him. Good… if he touches me again, I might just cum from my pants, the professor thinks, willing his member to not stand and his hole to not produce any slick.
His student’s face is contorted in worry. “Professor? Maybe you need to visit the clinic…” Childe suggests, a frown etched on his perfect lips. Zhongli gulps and smiles shakily. “Of course. I shall do that, thank you, Mr. Tartaglia—”
“Please call me Childe instead, professor,” Childe interjects, a smile returning to his lips. The furrowing on his eyebrows is gone and the succubus in disguise feels his heart beating faster. But then he takes in a deep breath and nods.
“I’ll leave the papers to you then. See you soon again, Childe .”
Zhongli walks to the door, opening it and letting his feet walk him to the nearest comfort room. He needs to wash his face.
And take care of a certain problem, he thinks and sighs.
Back in the classroom, Childe looks at the stack of papers and smirks.
Every attempt has been in vain for now.
Showing his ass, wearing a v-neck shirt that displays his unmarked neck, biting his lip while discussing, licking his lips when Childe recites, calling for him after dismissal to help him carry heavy assignments…
None. None of them worked to attract Childe to him.
His target has done nothing to indicate that he was being attracted to Zhongli, and it’s making the succubus cry out in frustration. Jacking off in the comfort room and in his rented apartment in frustration is getting to him, and he wants something filling him already.
And that something is Childe’s huge, fat, cock.
His fingers aren’t enough anymore. Human sex toys aren’t enough to fill him. It was getting frustrating, and he needs to step up his game. Stepping up his game would mean that he needs to be more aggressive.
So before he steps on the platform, he summons a pen on the ground and trips on it, his front landing on the platform with a thud. He could feel his ass bounce due to the fall, and Zhongli hopes that whatever being out there will help Childe notice it.
All of his students gasp, some scrambling to go out of their seat to help their teacher but a voice stops them. “I’ll go and help him. Go back in your seats.”
It was Childe’s voice. And for some reason, makes his cock twitch in his pants at the authoritative voice.
Footsteps approached him and in a flash, he’s carried bridal-style by his student. Zhongli looks up and sees Childe’s face. It’s blank and his lips are pursued in a thin line, eyes looking forward. “C-Childe?”
“We’re going to have a talk, you and I.”
Zhongli gulps. Suddenly, he’s nervous. For some reason, there’s an aura of authority surrounding Childe, telling him to submit. All of his senses are tingling, telling him to run.
But he can’t run. His body is—
Submit.
“I-I—”
Submit, Zhongli .
“O-Okay…”
Good boy.
Zhongli closes his eyes, the lull of an unknown voice sending him to the depths of unconsciousness.
When he wakes up, he’s surrounded by darkness. The succubus blinks, adjusting to the dimness of the room. Where is he?
“You’re finally awake, Morax.”
Zhongli sits up, eyes widening in fear. He looks around, trying to find the source of the voice. Who said his name? Who was it—?
“A name is a trivial matter to me, when in fact I know all the names of those who are tied to Hell.”
Who…?
A figure from the shadows emerges, revealing his student. There’s a smirk on his face. It’s a sadistic smirk that’s making Zhongli’s cock twitch in excitement. “So you did your research,” he says, and Childe shrugs.
“No research is needed.”
“ What are you then? Not one human knows my name unless you’re… a demon like me,” Zhongli points out. He stares at the human (?) and bites his lips. Looks like it was game over for him then.
“ Little succubus , did you think that I wouldn’t notice you prowling around and trying to get in my pants? You’re acting like an absolute amateur,” Childe drawls, standing up from the armchair. He approaches the succubus, who dares to not break their staring contest.
“Enough with the scolding. You’re no—”
A hand surges forward to grab his neck. The grasp is tight, choking the air out of him. Zhongli gasps, his tail appearing and his long nails digging into the arm that is holding him by the neck. “ Ack—! ”
“Fool. You dare to talk back to me?” Childe growls, his blue eyes shining with rage. The hand around his neck tightens more, cutting off any air entering his throat. Zhongli’s mind starts to become dizzy, the cut-off air circulation making him delirious.
It’s dangerous; this little game he’s playing with Childe. But he couldn’t help it. The energy rushing into him and the lack of oxygen is sending him in a frenzy. His cock is twitching, rising to the pleasure he’s experiencing. His hole is producing slick, dripping down, and staining his pants. More… more…!
The grip on his neck lessens a bit. “Oh? You’re getting off on this? Hah, I should’ve expected none the wiser from a succubus like you,” Childe mocks. Zhongli’s tail moves back and forth, showing the pleasure he’s getting from the act.
The pressure lessens until the hand gripping his neck lets go of him, causing Zhongli to crumple on the floor while coughing. He massages his neck, his cock, and his hole throbbing. He wants more, but apparently, his target has another idea.
Childe shoves him on the bed, pinning his arms to the sheets. At this point, he’s fully transformed into his true form; his tail fully grown with the end shaped into a heart, a scanty top that only covered his clavicle and his trapezius muscles, his nipples covered by a small cloth that resembles the wings on his back, small horns protruding his head and curving inward, and his feet finally wearing his signature black stilettos.
“Finally showing your true colors, little devil? You’re definitely putting up a good show,” Childe purrs, licking a stripe of bare skin on Zhongli’s neck, letting his tongue run from his collar bone to his ear. The wetness sent a shiver down the succubus’ spine, slightly squirming in his student’s grasp.
“C-Childe…!” the succubus moans, breathing quickening. He’s anticipating a lot from this human or demon, the fast flow of energy from the other sending him to euphoria. It’s addicting and Zhongli wants more of this. “More… a-ah—more, Childe!”
A harsh tug on his tail triggers his entrance to produce more slick, Zhongli mewling at the harsh treatment. “You don’t call the shots here, succubus," Childe growls into his ear, tugging the black tail again. The former cries, his cock straining against the skimpy undergarment he's wearing.
Swiftly and deftly, his student rips the undergarment off and lets his calloused fingers touch his wet folds. They brush against it, the slight touch careening Zhongli down the rabbit hole of pleasure. He's already full and yet Childe keeps on giving him more.
"Full … I'm full… Childe…!" Zhongli sobs, hands clutching the silk sheets and nails digging into it as the aforementioned man hums and plays with his sensitive folds using two fingers. "Keep feeding off of me, Morax. Fucking you while you're full will leave you pliant for me to mold as I please."
The succubus shakes his head, tears in his eyes. The two fingers pinch his sex, causing him to gasp and instantly cum. His semen pools on his flat stomach, cock starting to soften. But Childe grabs his member and gives it a pump.
"N-No—ah— C-Childe it's too much~♡!" The succubus cries, mind becoming more delirious in pain and pleasure. His body responds to the contact, delighted with the more stimulation he's getting. His student chuckles, caressing his wagging tail.
"You and I have much to catch up on, Morax my dear…" Childe coos, blue eyes shining with anticipation.
The succubus doesn't understand what his student meant, but he isn't given time to ponder on it as fingers plunge into his hole.
"P-Please…"
"Hm? Please what?"
"C-Can Master… please f-fuck this slutty succubus a-and fill him up…?"
A glint of teeth. "Does this little devil deserve Master's cock?"
"Y-Yes—AH!"
He's not so sure how long he's being fucked by his supposed target, but all that's in his head is to be full with this man's cum.
The fingers in his hole twist into a certain angle, pressing on his sensitive spot mercilessly. Childe continues to abuse it, fucking the succubus with his three fingers plunged into his wet hole creating squelching noises.
Zhongli's tail wraps around his student's arm, a feeble attempt to try to get his cock inside him. The latter is still half-clothed, only his shirt discarded on the floor. It was slightly unfair, seeing that he is bare for Childe to see while he only gets to look at his delicious six-pack abs instead of his probably big dick.
Childe groans, "One more, Morax. If you can do it one more time, then I'll fuck you with my cock."
The succubus sobs, closing his eyes to focus on the pleasure down in his hole. He clenches his fist and curls his toes, breathing unevenly as he feels the balloon inside of him pop, mewling as musky liquid releases from his hole. He doesn't know how many times he has squirted for Childe, and he probably doesn't want to know.
The sight of him squirting makes his student pant heavily, iris blown wide as he watches his teacher squirt his love juices. It covers his wet hand and spills onto the stained sheets, seeping through and onto the mattress.
" Hah, you really did squirt again. You're such a good slut, following his master's requests…" Childe coos, retreating his fingers from his wet ass. He licks them, tongue wrapping around the long digits as he takes in the succubus' juices. "Mhm … salty yet delicious."
The succubus' legs tremble, still spread out wide. Zhongli pants, red dusting his cheeks and eyes glazed over. He has reached his threshold of feeding way earlier so now all he's feeling is the overloading sensation that is mixed between pain and pleasure.
"Y-You… promised… me cock," the succubus whimpers, breathing still unstable. Childe smirks and licks the rest of his succubus' juices from his fingers, slurping them up. "Of course I did. But then, I want you to make the effort this time."
Tail perking up in interest, Zhongli quickly switches their position and straddles his master, grinning and giggling. He faces his hole to his master, letting his breath hover above it. Finally…
"Then… this slutty succubus will graciously eat, Master."
The succubus pulls down his master's pants, revealing his underwear that leaves little to the imagination. He can see the very visible outline of his master's large and throbbing cock, staining his underwear with precum. I need this in my mouth and in my hole…!
Clawing off the underwear with his face near Childe's cock, the moment it's released from its confines, it smacks him on his face. It leaves a bit of precum on his eyelids and Zhongli giggles, "Master's cock is so big~♡ This succubus can't wait till it enters his womb!"
He gives the cock a tentative lick with hooded eyes. The taste was musky and heavy, perfect as his food. Before he lets it go down his esophagus, Zhongli wraps his long tongue around the member, making slurping noises. Childe groans and thrusts upward, wanting to fill his mouth. The former giggles at the impatience that his master showed.
Then the succubus swallows the throbbing cock in one go, precum leaking down his throat. He rolls his eyes back, finally his master’s cock inside one of his holes. “Master, y-your cock is delicious~♡!” Zhongli moans around the cock in his mouth, relaxing his throat and sucking the member with grace.
Childe licks his hole, letting his tongue probe the hole as the succubus takes his cock in his throat. He thrusts upward, forcing his cock further down his esophagus. The action is welcomed because Zhongli makes a content hum and allows his throat to fully relax.
“H-Hah, look at my cumsleeve. Wouldn’t you like that, being my personal cumsleeve, you whore?” Childe comments, detaching from the wet hole. Zhongli keens around his member, eyes rolling to the back as he lets his student fuck his mouth.
After a few more thrusts into his mouth, Zhongli feels the spurt of semen inside his mouth, going down his throat and straight into his stomach. Childe is releasing so much (and groaning loud at the same time) down his throat that the succubus professor could feel his throat distending with the amount of cum going down. He closes his eyes and lets it, his hole and cock slick and waiting.
But his master is not done abusing his hole. Childe’s tongue prods deep in him, lapping at his folds as if he was thirsty and he was his water. Zhongli mewls, legs trembling at the merciless thrusting of his master’s tongue. “Master—a-ah~! Y-Your tongue is—hngh—going too d-deep…!”
Childe chuckles and its vibration sending shocks into his hole. Zhongli clenches around his master’s warm tongue, throwing his head back in pleasure. He’s seeing stars when he cries his master’s name, squirting on his face and his dick cumming on Childe’s chest. “N-Ngh! ”
The tongue retreats from his hole. Zhongli collapses on top of his master’s body, chest heaving. He’s orgasmed for too many times, he could feel his hole slacking at the lack of strength in his body. T-This creature… or whatever he is, is too much…!
But then he’s flipped around, his ass on top of Childe’s cock. Zhongli is sitting upward, slightly swaying so he places his hands on top of his master’s chest. “W-What—”
Hands grip his thighs, bruising them at the pressure the other is exerting. When Zhongli glances at the man underneath him, he shivers at the look Childe is wearing. There’s a grin on his face, and his eyes are cold. The blue orbs that are usually bright are now dull. There are alarm bells ringing in his mind, telling him to get out and leave. Get out.
“Do you honestly think we’re done? I haven’t filled you with my seed yet, slut.”
Zhongli moans when the dick underneath his hole hardens again, its tip shy away from entering him. He’s already so full and if he were to be fucked now, then his mind would go haywire. He would overload.
But don’t you want that? To be this man’s fuck toy?
The succubus whines. “B-But Master—” he starts but he screams when Childe’s quickly enlarging cock enters him in one swift go, sheathing fully into him. He throws his head back at the sudden intrusion, mind going overload. Too much… t-too much!
“Aren’t you succubi obsessed with getting fucked, hm? You want your pretty holes to be filled with cum, satisfied for the night right?” Childe asks, chuckling when he notices Zhongli’s fucked out expression; tongue-out, and unfocused eyes looking up at the dark ceiling.
“Well, your benevolent Master is going to fuck you with my seed. Who knows, I might even impregnate you,” his student finishes and thrusts hard into the succubus’ hole. The succubus sobs when the cockhead pokes at his second entrance, wanting to enter his second entrance.
“Y-You can’t—n-ngh~! No h-human can impregnate a succubus— AH! ” Zhongli moans loudly. This creature couldn’t possibly impregnate him, there’s no way. A human’s seed cannot fertilize his demonic ovaries, and he hasn’t heard of any succubus getting pregnant with a human.
His student chuckles. He stops thrusting and lets Zhongli relax for a minute. “Isn’t it obvious by now, little succubus? Or are you that thick-headed that you need to see it for yourself?”
The succubus sees Childe bring his hand up. He stares at the hand and sees his middle finger and thumb snap. Suddenly, the room around them warps and when he opens his amber eyes, he finds them sitting on a… chair?
No, it’s no ordinary chair. It’s a throne.
Then he twists his body around to look. They’re obviously in a different area now, and for some reason it’s familiar. He’s been here several times now, he knows that much but his heart drops when he finally recognizes the long gray decorated backrest that’s reaching the ceiling and the red carpet laid in front of the throne.
Zhongli turns back to face Childe, his fears confirmed. His master is still grinning, teeth glinting in the darkness. “Welcome back to Hell, Morax.”
The only thing he could say in front of Hell’s highest figure was, “Y-Your Highness…!?”