Work Text:
Childe slouched in his seat, eager to leave this class. He had been put, not voluntarily, in Professor Zhongli's late night philosophy class. And as a business major, he just didn't see the point. How could a philosophy class help him become an entrepreneur?
Needless to say, this class was tough for him to focus on. It was at 7 pm every Tuesday and Thursday, and Childe and his classmates were always assigned a reading to do before each class period. The readings were often long and tedious, and Childe tended to skim them right before he walked in the door.
The professor always picked on him, annoyingly. Even though Childe sat in the back row of the classroom and never raised his hand, it was always "What do you think, Mr. Ajax?" or "How does this connect to the reading, Mr. Ajax?". So frustrating.
At least Professor Zhongli wasn't awful to look at. With his long golden-brown hair pulled back in a ponytail and hypnotizing caramel eyes, he looked both young and old at the same time. He almost always had a cup of steaming hot tea at the beginning of every class, and would take sips of it throughout the lesson. Childe would certainly be lying if he said he never followed the small poke of his tongue from his lips to catch remaining drops of tea.
On this day in particular, Childe was exhausted. He was swamped with homework from his other business classes, and had been getting fewer and fewer hours of sleep each passing week. So, the daily reading just slipped his mind. It was so insignificant to him that he forgot to do it. No big deal, right?
Childe trudged to his seat in Zhongli's classroom. Last row, third seat to the left like always. He sighed and put his head down on the desk, waiting for the professor to start. It was going to be a long class period.
"Mr. Ajax", Zhongli's voice interrupted his reverie. "Please elaborate to the class what paragraph 2 of the reading meant to you."
Childe sighed. "Professor, I haven't done the reading. I'm sorry."
Zhongli peered at him, light brown eyes glittering with an emotion he couldn't read.
"I see...please stay behind after class, Mr. Ajax."
Childe groaned inwardly. He really wasn't in the mood to be lectured about a simple philosophy reading tonight.
The rest of the class passed in a blur, Childe just mentally preparing for what he knew was coming. He would just nod along as Professor Zhongli lectured about the importance of being prepared for class, and book it out of there as soon as he could to go study for his Econ exam tomorrow.
Zhongli concluded his lesson for the evening with "...I'll be ending it there for the night. Please come to class next week promptly and prepared with your reading."
As the rest of the students shuffled out, Childe stayed slouched in his seat, waiting for Professor Zhongli to beckon him up to the front. Once he did, Childe grabbed his bag and sat in the seat in front of Zhongli's desk.
"Mr. Ajax, I must say I have been disappointed with your results in this class so far. I know you can be a hard worker, and I wish you would apply yourself here."
Childe sat, slowly fuming. He was getting fed up with Zhongli's attitude, and was just annoyed at the situation in general.
"Professor, I really can't handle this right now.."
And with that, Childe rose from his seat and stood, sandwiching Zhongli between him and his desk. He put his hands on the desk, on either side of Zhongli's hips, effectively cornering him.
"I see the way you look at me, Professor", Childe said, mouth just a breath away from his ear. "You frustrate me to no end, and I know you do it on purpose. You must know what you do to me, right?"
At that, Childe ground his hips up against Zhongli, making his half-hard dick very well known. The friction made Zhongli moan slightly, and he blushed.
"So pretty..." Childe murmured, ghosting his lips on the side of Zhongli's neck as if he were about to kiss it. But he moved back to ponder his next move.
Did he want Zhongli to suck his dick? Absolutely, the professor looked as if he were made to have his mouth used. But that could wait for another day, Childe needed to release his tension in a different way. So..
"Open up, Zhongli", Childe commanded, prodding at the professor's lips with two of his fingers. Obediently, the older man parted his lips and took the fingers in, swirling his tongue around them as eagerly as a starving man ate at a buffet. For a second, Childe closed his eyes, imagining his cock taking the place of his fingers.
Once the digits were sufficiently covered with spit, Childe stepped back a little to flip Zhongli around, the brunette's arms slamming on the desk in front of him. He unceremoniously tugged the other's pants and underwear down, the clothing pooling at the floor.
Oh my god, his ass, Childe thought, admiring the perfectly round plump cheeks. He tapped one lightly and was pleased to see it jiggle. It was the most beautiful butt he had ever seen.
Using the two fingers wet with saliva, Childe started to finger Zhongli open, keeping notice of how the professor was reacting to his touches. What started off as muffled moans and small groans quickly turned into whimpering and begging as Childe fucked Zhongli with his fingers. But Childe kept poking and prodding with his fingers until Zhongli let out a yelp, confirming the location of his prostate.
Childe smirked. "Look at you, reduced to nothing but a begging mess. Should I give you what you so desperately want?"
"Ah, yes please Aj-"
"Call me Childe."
"Childe, please", Zhongli begged, rocking back on the fingers still inside of him. He turned to look at the ginger with a pleading gaze, and how could Childe resist those eyes?
He withdrew the fingers inside of Zhongli's greedy hole as the man moaned with abandon at the loss. Patting once more on his round ass, Childe took out his own cock and stroked it a couple of times. He lined it up with Zhongli, and watched with amazement as the professor took him in.
Once he was fully sheathed inside of Zhongli, he wasted no time. He pulled mostly out, leaving just the tip inside of his hole, and slammed back in with a groan. Zhongli just felt so good, he couldn't help himself. Below him, the professor was moaning loudly, rocking back on his cock to get it even deeper.
Childe slapped Zhongli's ass again, watching the ripple of flesh with amazement.
"You're such a slut, aren't you? Just can't get enough of this dick, huh?" Childe said, and the man below just moaned for an answer.
After a few more minutes of this, Childe knew he was close. Before he finished, though, he wanted Zhongli to cum. So he angled himself to finally hit his prostate with every thrust, and bent himself over Zhongli's back to reach around for his dick.
The abundance of pre-cum on Zhongli's cock made the slide of his hand easy, and just a few seconds of stimulation from both sides was too much for the professor, who came with a shout across his own desk. As Zhongli came, his hole tightened and it brought Childe over the edge. With one final thrust, he buried himself in Zhongli and spilled his cum inside.
After this much exertion, both were panting heavily, and they stayed like that with Childe still inside for a minute or two. Once Childe was fully soft and getting a little uncomfortable, he pulled out, some of his semen spilling out with him and dribbling down Zhongli’s legs. He gathered what he could with his fingers and put them in his mouth, tasting himself mixed with Zhongli. Childe moaned slightly at that, dick twitching with want. There was no way he wasn’t doing this again.
Zhongli turned around, his back now against the very desk he was just fucked over, and pulled up his pants with more than a little embarrassment. Casting his eyes away from Childe, he coughed to clear his throat.
“So…same time next week?” Childe questioned with a little grin and a wink.