Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/ works/8319061. Rating: Explicit Archive Warning: Underage Category: M/M Fandom: Infinite_(Band), K-pop Relationship: Kim_Sunggyu/Lee_Sungjong Character: Kim_Sunggyu, Lee_Sungjong Additional Tags: Quickie, thats_all_-_Freeform, Nothing_more, nothing_less Stats: Published: 2016-10-18 Words: 1382 ****** teacher... ****** by hojong Summary It was never easy being a teacher in a inner city school and Sunggyu found one of the best days to also be his worst. With his favourite student Lee Sungjong coming onto him, what was he to do? Notes just a simple quickie between a student and teacher! lol. probably badly written but... whatever! gyujong for life It was never easy being a teacher in a inner city school and Sunggyu found one of the best days to also be his worst. Sunggyu taught Korean language in one of the worst schools in the district and all the rowdy teens hassled him day in, day out. There was many tantrums thrown and more fights in his first year than he could count. Sunggyu knew that everyone he taught had potential to be great students and he knew their grades would be great if only they tried harder. There were a few students that did get very good grades, but around 80% or more of his class usually failed. It was just another Wednesday and Sunggyu was supervising the lunch hall. All the teens were running around the hall, ignoring Sunggyus calls for them to stop. Eventually the head master, Nam Woohyun came in and took over. Sunggyu thanked him and made his way up to his classroom. There was a group of boys standing at the top of the stairs. Their backs were to Sunggyu and they were all laughing. “You’re so fucking gay.” He heard one boy say. He heard a familiar voice whimpering, “Please stop...” He pushed past all the boys and found Lee Sungjong cornered by the group. His eyes were puffy like he’d been crying and his face was a deep red colour. Sunggyu scowled at the group of boys, “Get back down to the hall. I’m sure Mr Nam would love to hear about this...” The boys scattered quickly and when Sunggyu turned back to Sungjong his heart dropped. Tears were streaming down the boys face, he looked down at his feet as he played with his hands. “Thank you.” Sungjong whispered. He then ran away just as fast as the others, heading in the direction of the bathroom. Sunggyu walked into his room after lunch to find his second year class. They all ignored his presence and continued to chat. Sunggyu allowed them to do so as he sat down at his desk and rustled through some papers he left on his desk. From the corner of his eye he noticed Lee Sungjong gazing at him. He smiled softly and the young boys face turned a light shade of pink. He then looked the other way, back to his friends. The end of day bell finally rang. “Alright class,” Sunggyu smiled as he rubbed his hands together. “Remember to bring in your essays due for tomorrow.” The class mumbled something Sunggyu couldn’t understand in unison. Sunggyu stood at his desk, and as everyone left the class Sungjong moved in front of him. “Sungjong...What’s wrong?” Sunggyu asked. “I have a problem.” Sungjong said shyly. His hands were behind his back and he looked really nervous. “Ah, I see.” Sunggyu sighed. “What is it? Girl trouble?” “No! Not that...” Sungjong sighed before he decided to speak again. “Um, Mr Kim... I like you.” Sunggyu was slightly shocked when he heard this and he wasn’ t sure if he’d heard correctly. “I see...” Sunggyu said, stunned. He couldn’t say anything else. “I really like you Mr Kim. Mr Kim... Do you like me back?” Sungjong moved closer, too close, and Sunggyu could feel Sungjongs breath on him. “No. Sungjong, I’m sorry, I can’t.” Sunggyu said, trying to move away, but Sungjongs hands were on his shoulders now. “Why not? Why don’t you like me?” Sungjong desperately asked, “Please.” “Get off Sungjong!” Sunggyu tried to push the boy away when he noticed the tears welling up in the young boys eyes. “Don’t you think I’m cute? You think I’m cute... Right Mr Kim?” Sunggyu looked at the door to his class. If anyone walked in right now he’d be in so much trouble. He looked at Sungjongs face. His face was pretty cute and his face was pink. “Yeah I guess.” Sunggyu was being honest, but he didn’t mean to answer like that. “Please like me back. The way you stand up for me when I’m being picked on makes me so happy. That’s why I like you. Please...” Sungjong leaned into his teacher, his lips colliding with the older mans. Sunggyu tried to push the younger boy away but he couldn’t help himself. His arms wrapped around the small boy and he pulled him in closer. Their bodies pressed against each other, their tongues played with one another. Sungjong pulled away first, a smile on his face. Sunggyu rushed to his classroom door and locked it, making sure that no one else could enter. He walked back over to the desk and leaned against it, Sungjong sank to his knees. “I’ve been waiting so long...” Sungjong said as he undid his teachers belt. Sunggyu knew what he was doing was wrong, but it felt so right. Sungjong pulled his trousers down and licked at Sunggyus covered cock. Sunggyu moaned, “Come on.” Sungjong smirked up at him, looking so sexy Sunggyu could barely contain himself. Sungjong yanked on the older mans boxer shorts, he gasped. “It’s so big.” He began to lick at Sunggyus semi hard cock as his hand went down his own trousers. Sunggyus cock was hard so soon it was embarrassing, but Sungjong didn’t seem to care. He took the shaft in his mouth and went to town. The way he licked the underside made Sunggyu want to scream with pleasure. All of his senses were heightened and all he wanted to do was fuck his student. Sungjong bobbed his head up and down on the large dick and Sunggyu felt a knot in his stomach. He grabbed on Sungjongs hair and fucked his face. Sungjong gagged and gasped but Sunggyu could barely hear him. Sungjongs nails dug into Sunggyus waist and he was finally let go, allowed some air. The boy looked up at Sunggyu. There was saliva hanging from his mouth and a hand down his pants and his face was red and puffy and Sunggyu just couldn’t control his thoughts. He didn’t care about wrong and right anymore. He pulled Sungjong up from his knees and kissed him hard, tasting himself. When he pushed away Sungjong smiled. “Tasty, right?” With that, the young boy was on the desk. Face down, his ass facing Sunggyu. “You’re so gorgeous.” Sunggyu moaned as his fingers danced over the boys pretty, smooth hole. He licked at the rim and Sungjongs head hit the desk. As Sunggyu pushed his tongue onto the boy, Sungjong bit down on his bottom lip. Sunggyu stood up and lined himself up with Sungjongs hole. “Sir wai-” Sungjong began but he was too late, Sunggyu was already pushing into him and he screamed. It was so painful and tears streamed from the boys eyes. Sunggyu waited though, and let the poor boy give him a signal. Sungjong soon nodded, giving Sunggyu the heads up. Sunggyu pounded Sungjong into the desk, giving him all of him. The pain mixed with pleasure and eventually Sungjong was hard again. He stroked himself like there was no tomorrow. “Fuck me!” Sungjong moaned, “Please, please, please sir.” “Ugh, you’re so beautiful Sungjong, how did I not think of this before...” Sunggyu hit Sungjongs prostate repeatedly and his hands gripped onto Sungjongs waist. Sungjong reached his climax with a loud moan, a white substance covering Sunggyus desk and his own classmates test results. Sunggyu felt Sungjongs hole twitch around him, the heat embracing him even more. The knot in his stomach grew tighter and he pulled out quickly. Bliss washed over him and his cum washed over Sungjongs back. Sunggyu took a tissue and wiped the substance off of Sungjong. “That was so good, sir.” Sungjong smiled at him as he stood. The word ‘sir’ made Sunggyu realise what he had just done. He’d just had sex with one of his students. He suddenly felt embarrassed and rushed for his clothes. “Sungjong, you should go.” Sungjong got dressed, looking over to his already fully clothes teacher. He grabbed his bag. “Will we do this again?” He asked “No.” Sunggyu said blatantly. Sungjongs smile turned to a bitter scowl. “Why not? Don’t you like me?” Sunggyu sighed. “Just get out Sungjong..” Sungjong left, leaving Sunggyu to sit in his classroom alone and dwell on his own mistake. Please drop_by_the_archive_and_comment to let the author know if you enjoyed their work! e you okay, Matsuno?” Choromatsu inquired, eyebrow raising. “Just,” she swallowed uneasily, “a bit nervous, y’know?” She reached down to rummage through her bag, grabbing her textbook and binder. “That’s understandable, this is a bit of a big deal.” His voice was flat, and he crossed the room to lean on his desk. “There really is no easy way to put this; you’re currently failing my class.” He said this as if it was news, and Osomatsu almost wanted to laugh but she held her tongue. “Well, that’s why you’re gonna help me today, right Sensei?” She smiled and clicked her pencil. The sooner she cooperated the sooner this would be over. “Actually, Matsuno-san—” “Just call me Oso, please.” “I’m…” he hesitated, “no, but I’ll compromise. Actually, Osomatsu, we’re going to need to meet after school every day for at least a week.” He peered down at her over his glasses. Osomatsu stood up. “That’s not fair! I have baseball on Tuesdays and Thursdays, and we have a game this Friday. I can’t miss any of that!” She was yelling now, but she couldn’t even care to catch herself. How dare this piece of shit just declare that she was going to be denied sports over some bad test score. Choromatsu sighed. “If you can get your grades up to a passing level by Friday, I can allow you to play in that game. Otherwise, I’m afraid you’re stuck with me and, might I add, I’m stuck with you until we can fix this. You simply have to graduate, Osomatsu.” He spoke matter-of-factly, which only pissed Osomatsu off more. However, he was giving her somewhat of a chance. “Okay,” she replied flatly, getting her textbook open, “I’ll try, where do we start?” ===============================================================================   It was dark out, maybe around five or six when Osomatsu finally got home. She knocked rapidly on the door until the prince of the household opened it himself. “Aneki, you’re home late tonight. Was practice moved to Mondays?” Todomatsu said, moving out of the way so his sister could enter. He was a first year, and a smart one at that. Though a piece of shit, he had apparently taken some IQ test years ago and been categorized as a young genius by the world. Osomatsu shrugged as she slipped off her shoes. “No, I just had to meet with a teacher, that’s all.” Todomatsu grinned, the turned and shouted into the house, “Oso-nee had to see her teacher after school!” God fucking dammit, did he really have to ruin her night like that? The dinner table was a minefield for Osomatsu. Nothing she could say was right. “Honestly, you ought to take your classes more seriously, young lady! Why can’t you learn a thing or two from your brother?” Her mom snapped. “If you seriously can’t raise them by year’s end even with your teacher’s help, you can say goodbye to your makeup collection. You need to start acting your age.” Her father added. The rest was just drowned out as Osomatsu stared down at her food. Why even bother countering them? She knew they were right. There really was something wrong with her. After more talk that stroked Todomatsu’s ego and shot down any self-confidence Osomatsu had tried to build up herself, she dragged herself up to her room. Grabbing her headphones and mp3 player, she clicked shuffle and buried her face into her pillow, gradually turning up the volume until it drowned out the noise of her crying. ***** Osomatsu doesn't know Quadratics ***** Chapter Notes See the end of the chapter for notes “So you’re actually going through with this?” Totoko snorted as she swung her legs carelessly. “I mean I didn’t think you were the type to give in to authority, Oso.” It was hot as balls outside, and Osomatsu squinted in the bright sunlight. “Well it’s not exactly like I have a choice. My family’s already up my ass about the whole ordeal.” She nudged a piece of food at Totoko’s lips with her chopsticks. “I don’t want it.” “Ah yes, my friendship rewards me.” “Seriously though,” she mumbled around her lunch, “I don’t know what to think of this guy. I mean he’s trying to help me, I get that, but he’s really shitty at it.” A finger poked at Osomatsu’s cheek, interrupting her. “You had a lil’ bit of rice on here.” Totoko flicked it off, and Osomatsu relaxed her shoulders in defeat. The anger that she had tightly wound up in a ball was now just unravelling into an incoherent sludge. “Seriously though, tell me about it. What’s on your mind?” Osomatsu let out the breath she didn’t even know she was holding, and pouted. “I’m not smart enough, Totoko – I mean everything he’s saying is on another level! It’s like trying to hop into a TV show at season 2, you can’t possibly know what’s going on, but I just kept nodding. I don’t want him to know just how stupid I…” She trailed off. “Hey,” Totoko’s voice was soft and sympathetic, “just come clean to him. He can’t help you if he doesn’t realize how behind you are. He istrying to help you, after all. I’m sure he’ll understand.” “You think I should do that?” She placed her delicate and meticulously maintained hands in Osomatsu’s calloused ones. “Yeah I do.” Somehow hearing that made it all better. =============================================================================== It was four o’clock again as Osomatsu stood outside the classroom. She absentmindedly hummed a tune and swayed, slamming her back against the door to the beat of the makeshift melody. A small voice in her head told her that maybe, just maybe,Choromatsu-sensei wouldn’t show up. Maybe he suddenly went home sick, or maybe her coach would come by and tell her that she was excused and allowed to go play ball today. It was Tuesday already and she was missing practice. Totoko had reassured her that the team would be fine but stubbornly Osomatsu refused to believe that they could play well without her. She had reached what must’ve been verse twenty to the made up song when her teacher stood before her, books in hand. His smile was surprisingly gentle. “I didn’t know you were the musical type, Matsuno-san.” He reaches over her and unlocked the door, walking around her to get inside. Osomatsu sputtered, face going red. “I am not! Also I thought I asked you to call me by my first name.” “Oh did you? My mistake.” He mumbled, clearly only half paying attention as he rummaged through his papers. “Where were we? Quadratics? Remind me I’ve had a long day.” ‘You and me both, man,’Osomatsu thought to herself. She pulled out her notebook and sighed. She had to come clean. Totoko was right, he’d probably understand. “The truth is, sensei, last night I was uh…well I was a bit lost? I don’t think I understand that yet.” Choromatsu frowned and paused, his eyebrows creasing. “Alright then, where areyou then, exactly? Show me the last homework assignment that you felt confident doing.” Osomatsu’s heart sank and she pulled out a torn and crumpled paper that must’ve been from last year. She handed it to him and looked away, not wanting to see his reaction. This was it; now he knew how stupid she really fucking was, way to go. To her surprise though, Choromatsu placed it on the table and sat down. “Pull up a chair, Matsuno-san.” He didn’t sound angry? He sounded friendlier than last time, and Osomatsu hesitantly opened her eyes, then sat down across from him. She scratched the back of her head. “So…what now?” “Well, you obviously know how to graph, and you know slope-intercept form,” Choromatsu looked up. She was obviously lost, so he circled the example. “You know, this formula?” “Oh right yeah that. Yeah, yeah I’m pretty good at that.” She felt, confident? Was that even a possible outcome? “Right, so why don’t you try this? It’s similar just try to fill out those questions and I’ll make sure you don’t get lost.” He rested his head on his hands and gave Osomatsu a reassuring smile. Suddenly she felt like she could do anything. ===============================================================================   It was Thursday, and Osomatsu was once again at the familiar corner of the rooftop. Totoko opened her lunch and gestured, knowingly. “You see, Osomatsu, I toldyou! How did last night go? Was it as helpful as Tuesday?” She leaned forward uninvited and stole a piece of egg that was unspoken up for grabs. “Man, it’s great. Y’know sometimes he can be a bit of a pain, but I feel like I’m really getting progress!” For once Osomatsu was ravenously eating the little lunch Todomatsu had made her. “I’m going to ask him if I can play again today. He has to say yes, right?” “I don’t see why not, you’re putting in a good effort – I mean you got back a 5/10 on the last quiz; that’s a huge improvement. Besides, we really need you. Homura-chan is filling in for you and she just doesn’t have your stamina, Oso.” She opened up some fancy western pastry and bit into it. “Yeah, you’re right,” Osomatsu said, reassuring herself. She stared up at the sky, watching clouds lazily roll by. The easy life was just within reach, she’d shown she was better now, and surely Choromatsu-sensei would reward her for all the backbreaking math. Though she didn’t really mind his help. He was nice. She smiled with lidded eyes and sighed. “You think he’s cute, right?” Osomatsu shot up. “No way! Totoko that’s,” she paused and laughed, “that’s just gross, even for me!” She shook her head and gagged. Totoko was right about nearly everything, but definitelynot this. “He is nicer than you’d expect, though. He isn’t as much of an asshole as he seems in class.” “Is that really so weird? I mean in class he has to keep everyone in line all year. I’d get pretty jaded too.” That would probably wear and tear on someone over the years. Hold old was he by now even? Why did she care? Osomatsu wasn’t sure why so many questions swam around her empty head. Whatever, she had baseball to look forward to tomorrow. The bell rung, and Osomatsu looked at her reflection in the specs of soy sauce left in her lunchbox. “Yeah, I guess so.” =============================================================================== Like clockwork, Choromatsu was unlocking the classroom at five minutes past four. It wasn’t a set-in stone routine at first but it seemed that he always showed up as the minute hand made its firth twelfth’s worth of progress around the face of his watch. Personally, Osomatsu saw no need for watches in this day and age; people always had their cell phones on them, why have an expensive gadget to do the same thing? However, it did seem to be a staple that anyone above the after of eighteen got. Maybe when you became an adult the government just gave you one that was mandatory. Regardless, she stepped into the classroom and took her usual seat on the other side of Choromatsu’s desk. Before he could speak, Osomatsu nervously slammed her hands on the desk. “Is…something wrong, Matsuno-san?” “I uh,” she fumbled over the words in her mind, “I was wondering if I could play in the game tomorrow? I mean I’ve been working so hard and I’m sure my grades are better?” She looked up tentatively, and saw Choromatsu looking at her with…pity? What the fuck? No, he hadto say yes. “Osomatsu you’re doing great but, I can’t permit that. You aren’t passing the class yet.” “Isn’t there anything I can do?!” She shot up, livid. This was unbelievable! He had lied to her. She was totally doing well enough. Choromatsu groaned and clutched his face. “Control your temper, Matsuno. I have no vendetta against you, I just can’t allow you to participate in sports yet.” Choromatsu pulled out a worksheet and passed it to her. “Work on this,” he said dryly. Osomatsu snatched it from him, making a point of her distaste, then began working. The gears in her head started turning as she scribbled absentmindedly on the margins of the page. There had to be something. She couldn’t play this game the fair way, so she would have to think outside the box. What could she bribe Choromatsu with? Speaking of the devil, said teacher peered over at her work. “You’re not filling out the paper. What’s on your mind?” His glasses obscured his face and he raised an eyebrow. Biting back a sharp ‘I’m obviously pissed off at you, genius,’ Osomatsu looked up with the most sweet and doe-eyed face she could muster. “Well, I was just thinking of some…extra credit I could do.” She drew a little heart on his papers. Choromatsu visibly swallowed. “W-What?” Holy shit he was actually taking the bait. She leaned over the desk and cupped his cheek. “I mean isn’t there somesort of middle ground we could reach? A favor like….” “…Like?” “Like maybe you let me play tomorrow, and I…” She glanced down at his pants. Was she really about to do this? Well it was for the good of the team. “And I take care of your little problem.” Osomatsu could barely believe her luck when Choromatsu croaked out a weak, “Deal.” Chapter End Notes Sorry for such a long hiatus! I hope to get chapter 3 out within the next month! Please be sure to comment if you have any suggestions or feedback. Thank you for reading ***** Playing dirty ***** Chapter Notes See the end of the chapter for notes Osomatsu had never actually sucked a dick before, and such a realization came to her only when she was already kneeling before her Math teacher, watching him unzip his pants. Way to think things through. Blood was pounding in her ears and adrenaline was coursing through her body like she was one super highway of fluids.  She was under his desk, carefully out of view for anyone who might walk in. The whole situation was still risky, though. She was pretty sure that Choromatsu had said something, but whatever it was had eluded her at the moment. She couldn’t hear anything but her own breathing, senses acutely focused on practically nothing. Osomatsu mumbled out some sort of affirmation, though to what she wasn’t sure. Then she saw her teacher begin to unzip his fly. Oh yeah, right. Unceremoniously, Choromatsu dropped his pants to his ankles. He was already hard, which was somewhat reassuring, and precum leaked through his boxers. Osomatsu looked up at him for silent permission to continue, and got an encouraging pat on the head. With shaking hands, Osomatsu pulled his dick through the slit of his boxers, and wrapped her clammy fingers around it. Her teacher tensed above her at the contact. He squinted his eyes shut and let out a shaky sigh. Osomatsu swallowed her pride and wrapped her lips around the shaft, sucking lightly. There was an acrid taste coating the head from the precum, but then again, she didn’t really expect this to be a positive experience for her. Just a means to get what she wanted. Puffing up her cheeks and tilting her head to the side, Osomatsu tried to find the best angle to tackle this. His dick wasn’t huge or anything, it was actually manageable, but Osomatsu wasn’t quite used to taking anything. She bobbed her head in a gentle rhythm, eyes flicking upwards to check on her teacher. Oh my god he looked good. Hand covering mouth and eyes lidded, Choromatsu’s expression was flushed. His glasses were foggy and small noises left his throat. It was as if he hadn’t gotten off in years. Knowing this guy though, that was probably the case. Osomatsu smiled inwardly. A trembling hand pushed the back of her head, pressing her face up against Choromatsu’s pelvis. Huffing air out of her nose in protest, Osomatsu tried not to think about the pubic hair being pressed against her pretty face. God if only the baseball team knew what she was putting up with for them. On second thought, she should probably keep this to herself. Choromatsu was now completely erect, making this whole situation harder, pun intended, for Osomatsu to swallow, pun also intended. Something deep inside of her, however, strangely enough loved this. The pure adrenaline was unlike anything that she had experienced before. There was more at risk here than there ever was on the outfield or pitching with sweat dripping from her brow. No, this was even more of a rush than anything she’d ever done. And boy did she like it. “M-Matsuno-san!” Choromatsu’s voice was raspy and broken as he cried out. He gripped onto Osomatsu’s head with both hands now, and huffed weakly. Hips bucking violently forward, he didn’t even have the decency to properly warn Osomatsu before cumming down her throat. Osomatsu reflexively tried to pull back, but her teacher’s grip was surprisingly firm. Tears beaded at the corners of her eyes and she swallowed to the best of her ability. It tasted not necessarily awful, but certainly unpleasantly salty, especially in such an amount. Some leaked from her lips and dribbled down her chin as she finally could pull back, a trail of saliva and cum pulled between her mouth and the shaft. She caught her breath and looked up expectantly at her teacher. “Not bad, huh?” She grinned coyly and wiped the mess off of her face. He looked surprised; as if he was taken aback in the moment and still processing it. Whatever, she’d take it as a good thing. Her stomach twisted into nervous knots, however, when the weight of what had just happened hit her as well. The ambient noise of the room around them became uncomfortable. She had just blown her fucking teacher. She, a minor, had sucked off some guy’s dick under a desk. God this was going to be awkward. Scratching the back of her neck, she tried to think of something to say. However, Choromatsu said it for her. “That was…we can’t…we can’t ever do that again or tell anyone do you understand?” His tone was uncertain and robotic, as if he was only saying this out of moral necessity. “But, I will uh, let your coach know you’re permitted to play tomorrow. This doesn’tmean you don’t still have to see me after school on days you don’t have sports.” He sounded like he thought he was on top here but Osomatsu knew shehad won. She’d gotten what she wanted from this guy like taking candy from a baby. God if sexual favors made him thatweak, she could probably get him to do anything. “Thank you sensei!” Osomatsu got up and kissed him on the cheek, leaving the young teacher flustered and stuttering. She grabbed her belongings and opened the door, but turned back to face Choromatsu before leaving. “Y’know, I think this was my favorite lesson yet.” ===============================================================================   Cum tasted fucking awful. In the moment the rush of everything had dulled her senses but now, walking home, Osomatsu was painfully aware of everything. The ache in her jaw and the aforementioned lingering taste made her just want to lay down and puke into a bucket. What was she thinking? What if Choromatsu told her parents. Wait no, he’d never do that; he’d be outing himself as well. A lightbulb went off in Osomatsu’s head as she turned the doorknob to her house; she could hold that experience over Choromatsu’s head for now on to get him to do whatever the fuck she wanted. Sure blackmail was dirty, but hey she was already playing that sort of game anyways, right? Chapter End Notes Sorry this took so long! Hope you all enjoy it just a tiny bit. Please drop_by_the_archive_and_comment to let the author know if you enjoyed their work!