KINKTOBER DAY 3: Dacryphilia (crying)/ Overstimulation/ Multiple orgasms
Bkdk where Katsuki has always felt sorta weird about the nerd crying in front of him since middle school. He used to enjoy making the nerd cry for the power trip, but he's beginning to realise with +

horror that there might be another reason he likes to see Deku cry. He first comes to this conclusion when they're sparring, and Deku randomly bursts out crying. He's seemed distracted the entire evening, but this takes the biscuit.
"I'm sorry, Kacchan," he dribbles, wiping at +

his tears, "i-it's just th-that my favourite ch-character from my f-favourite series d-di-died a-and she'd gotten so much d-development, I thought sh-she was gonna /live/!"
Katsuki doesn't quite know how to handle the nerd crying on the floor in front of him. His cheeks are wet +

with tears, eyes wide and watery, face flushed. It's... hot.
Wait.
Wait.
Wait, what the /fuck/?
It is /not/ hot!
Except, as Katsuki stares at him, he can't help but imagine tears spilling down Deku's face and neck because of /Katsuki/, because Katsuki's teasing him and touching+

him and making him feel /so damn good/ that he can't help but cry like a useless brat.
Shit.
Katsuki's body feels hot all over as he watches Deku cry, practically dumbfounded. Where did that image even fucking come from!? All he knows is that he needs to leave, /now/. +

"Whatever, nerd," Katsuki sighs, stretching his body casually, like he's indifferent. "I'm gonna go study. Text me when you're not a fucking mess. And uh, take care of yourself."
Katsuki curses himself as he leaves. /Take care of yourself/!? The hell is that meant to mean!? +

Katsuki's sick of all this questions, so as soon as he gets to his room, he pulls his laptop to his lap and asks Google a few questions:
why do I like it when my friend cries
I don't hate my friend but I want him to cry
is it possible to make someone feel /too/ good
and so on. +

That very night becomes an unforgettable night of self-discovery, and Katsuki emerges with 'dacryphilia', 'overstimulation', and various inappropriate fantasies of Deku tumbling about in his mind.
He's attracted to Deku. To /Deku/, of all people. It almost pisses him off, but in+

a stupid, ironic way, it makes perfect sense. It explains everything. Why the hell else would he be so damn pressed about Deku in the way that he is? It goes beyond healthy rivalry, he knows that now. He wants Deku, /like that/. But he can't have him, obviously. So instead, he +

sets out to satisfy himself in the only way he can think of: he's going to make Deku cry as much as he can. He tries his best not to /hurt/ Deku at the same time, which involves some creative thinking. He goes from sending Deku angsty content about his favourite (dead) character+

to making him handmade bentos and buying him little tokens of affection. Deku always cries at least a little when Katsuki does nice things for him, and Katsuki's surprised to find that he /likes/ doing things for Deku. Which is a fucking issue, because now it goes beyond wanting+

Deku in a sexual manner. He likes him in a romantic fashion too now. No, that's not quite right. He's /realised/ he likes him in a romantic fashion. These shitty feelings have always been there. So how does he sate his romantic half and his horny half at the same time without +

alerting Deku? Simple: romance movies.
He and Deku have a movie night every Thursday. Some of his friends have called it their date night (and have subsequently received explosions in their face), and Katsuki looks forward to it every week. After sparring together, they'll go to+

either his own or Deku's room, and watch movies. Whenever it's Katsuki's turn to pick, he picks the most heartbreaking or sappy romance movies, just so that Deku grabs at his arm and cries against his shoulder. Fuck, it's the best feeling in the world, being so close to him and +

seeing Deku cry so damn prettily. Sure, he hasn't really worked out how he can fill his hunger for overstimulating Deku without /sex/ being involved, but he's content for now.
It's Katsuki's turn to pick a movie tonight, and they're both cuddled on his bed as the opening credits+

to the movie play. He's heard it's got a good plot and good characters, which is a must: not only does it help him sit through the romance, but Deku won't cry unless he's /invested/ and the plot doesn't have any holes in it that he can criticize and ramble about instead of +

paying attention to the movie. And hell, this movie lives up to expectations. Deku's already sniffling twenty minutes into the movie, resting his head against Katsuki's shoulder. Katsuki's delighted, a feeling that only grows when Deku starts crying in earnest an hour in when +

a character reveals their love by sacrificing themselves for another character. Katsuki's not even looking at the screen anymore. He's staring at the way tears dribble down Deku's face, making his skin glisten and glow with a rosy red. Katsuki wants to pinch his cheeks, put his +

hands all over Deku and find out what makes him tick. He wants Deku's tears to turn into sobs as Katsuki makes him feel good, so damn good that the nerd can't help but cry as Katsuki fucks him over and over and over. He gets so caught up in the fantasies that he's not snapped +

back to reality until he feels Deku shift away from him slightly.
"Kacchan," Deku whispers, wet eyes locked on Katsuki's, "this might be kinda personal, but uh... w-why are you hard?"
Katsuki looks down. Oh fuck. Right. Fantasies turn him on. And when he's turned on, it fucking +

/shows/.
"Because the actress is hot as fuck," Katsuki bluffs immediately. "What's it to you, huh? It's fucking natural, stop blushing about it."
"K-Kacchan, you um, told me you were gay?" Deku points out, furrowing his eyebrows in bewilderment. "Did your sexuality change? Which+

is perfectly valid, by the way! I'm not judging you! I just wanna know..."
Katsuki resists the urge to facepalm. How the hell did he forget that Deku is one of the people in a very close circle of friends who know he's gay for certain? Damnit, he panicked.
"I said /actor/, you +

deaf or something?" Katsuki rewinds.
"It's... an all-female cast," Izuku says, so timidly that Katsuki almost doesn't hear him. Katsuki bites his tongue. Oh hell. "Is there something you wanna tell me, Kacchan?"
"What do you expect me to say!?" Katsuki exclaims, scowling. "How +

the hell am I meant to know why I'm hard!? Stop pestering me! If it makes you that uncomfortable, I'll go get rid of it in the bathroom!"
Deku's face goes an even brighter red at that (which is cute as fuck), and his eyes flit to Katsuki's crotch. The way he's acting... Either +

he's embarrassed as fuck, or...
Fuck it, Katsuki decides, it's now or never.
"What? You like the idea of me /dealing/ with it?" Katsuki asks, raising an eyebrow. Deku eyes widen as he stutters something incoherent. "Tell you what... Answer me honestly, and I'll tell you why I'm +

(me: ehehe time to make them do sum fucc
the tweet limit: *throws holy water on me* absolutely not)

hard, hmmm?"
Deku's eyes dart between his face and his clothed erection before he squeaks: "I do like the idea of you, u-uh, dealing with it. I-In front of me. O-Or w-with me."
"Good boy," Katsuki purrs, closing the laptop and dragging Deku onto his lap. "I like seeing you cry, +

Deku. Not because I want to /hurt/ you, but because you look sexy as hell with tears in your eyes."
"Dacryphilia," Deku breathes.
"Looks like someone's done his research," Katsuki nods. "So, about me /dealing/ with this..."
"L-Let me jerk you off!" Deku blurts, before covering +

his mouth in pure fright. Katsuki grins, hands trailing around Deku's hips and grabbing his ass. Deku yelps, and Katsuki chuckles.
"You want a piece of me?" Katsuki says sultrily. "Then let me get you off too, Deku."
"H-How?" Deku whispers, eyes lighting up. Katsuki brushes his +

clothed hole, pressing between his fat ass cheeks to rub at it. Deku makes a soft sound, biting his lip to muffle himself.
"A wild guess, but I'd say you like fingering yourself, don't you?" Katsuki teases, rubbing at the hole a little more as he begins to grind up. Deku makes +

another little noise, giving Katsuki an idea. Why does he have wait to get Deku off? Maybe if he starts now, he can work in a few orgasms... The thought of overstimulating Deku before he even gets to fucking him just makes Katsuki harder, and so he starts to grind up faster +

until he's moving at a steady pace, massaging Deku's big ass and whispering dirty things to him.
"I bet you finger yourself every night, Deku, just thinking of me getting off in front of you, just thinking about me using you like my own personal cocksleeve, huh?" he says. Deku +

whines and tries to steady his hips, but with the way Katsuki is moving underneath him, he's swept up into the sensation, and soon enough, he's rolling his own hips against Katsuki. And fuck, it feels so damn good, but Katsuki's got a lot of stamina. He's going to make Deku cum +

loads before he cums himself, just the way he likes it. "Bet you already know how big my cock is, don'tcha, Deku? Bet you're keeping notes, practicing on shitty dildos that can't compare to my length, huh? Can you feel how big it is against your fat ass, huh, Deku?"
He starts to+

pick up the pace as an unwilling moan slips from Deku's plush lips. He buries his head in Katsuki's shoulder and says:
"K-Kacchan, s-slow down, I-I'm not good at k-keeping up wi-without c-cumming. I-I'll orgasm too soon!"
"Too soon? Nah," Katsuki grins. "You're not done until I +

say you are."
Their bodies are pressed together, and Katsuki can feel Deku's erection against his abs, his small cock twitching as Katsuki pleasures him over his clothes. Deku buries his face further into Katsuki's shoulder as Katsuki keeps going faster and faster, silencing his+

moans against Katsuki's collarbone poorly.
"I-I'm g-gonna, oh, oh, Kacchan, I'm gon-gonna-ohhh!" Deku groans, arching forwards as the heavy friction of Katsuki's cock and the big hands grabbing at his fat ass combine to bring him to an orgasm. He pants against Katsuki, starting +

to come down from his orgasm when Katsuki thrusts a hand down his trousers and wraps his hand around his leaking cock, stroking rapidly. Deku cries out and pushes against Katsuki's chest, mouth open in an 'o' as he whines, "N-No, no, Kacchan, it's too much, st-stop, mmm...!" +

"You're telling me to stop but you're curling into my touch, Deku," Katsuki says in his ear. "Seems to me like the slut wants more. So I'll give you /more/."
He strokes Deku's dick relentlessly, milking him for cum and spreading it all over his length as he continuously jerks +

Deku off. He feels something wet against his collarbone, and he clutches Deku's face in one hand, pulling it back so that he can stare at the younger hero's face. Fuck. Fuck, /there it is/. Deku's eyes are full of tears, mouth hanging open in little "ah ah ah" pants as Katsuki +

mercilessly jerks him off. Katsuki speeds up at the sight, and Deku whimpers, hands digging into Katsuki's shoulders as he orgasms again. Tears flow freely down his cheeks, and Katsuki pulls his hand away. Deku seems relieved. Idiot. He pushes Deku backwards onto the bed, +

manhandling his deliciously wide hips and flipping him over so that his ass sticks up in the air. It's covered by a pair of gym leggings, which is no good.
"K-Kacchan, w-what are you-oh my god!" Deku's question turns into something else as Katsuki gets a grip and /rips/ the +

offending piece of fabric down the middle to expose Deku's big ass. Fuck. He's not wearing underwear. How did he not notice that when he was jerking Deku off? Whatever, it's hot as fuck, and Katsuki's more than happy to dive forwards and lick a long stripe between Deku's ass +

cheeks. Deku gasps in surprise and looks back. Katsuki grins at the sight of tears dripping down his face and pooling at his chin.
"Kacchan, no, I-I can't take it!" he begs.
"What was that?" Katsuki asks slyly, kissing his tight hole before pushing his tongue in. Deku moans, +

/loudly/, but Katsuki doesn't care if people hear. He's gonna make Deku feel good, so fucking good, he won't even be able to speak. He's going to reduce him to a pathetic, helpless /slut/. He fucks in and out of Deku's tight hole with his mouth, hands groping his ass as Deku +

begs him to stop but pushes his ass back against Katsuki's face at the same time. It's gotta be slick enough to make it easier when Katsuki puts his cock in (because he /is/ going to fuck Deku's ass; his cock is throbbing but patience has its rewards, he's learnt), and that's +

the excuse he gives Deku when the nerd cries out and sniffles, burying his face in the sheets and clutching onto them as his thighs tremble from being fucked so thoroughly. Katsuki jiggles Deku's fat ass cheeks in his hands, adding to the stimulation as he moves in and out +

without so much as a single pause.
"G-gon-nnnnn, mmm, gon-na c-cum, K-Kacccchh-" Deku manages to choke out. Katsuki purrs praise against him, telling him what a good slut he is as he reaches around Deku's wide, fuckable figure and starts to jerk his tiny leaking cock again. +

Deku doesn't have the words to protest, arching his back and pushing his ass further against Katsuki's face as he drools and spills tears onto the mattress. Soon after, splatters of cum join the fluids on the mattress, Deku's legs trembling so hard that it seems like they're +

going to give out completely. /Good/. Just the way he likes it. Katsuki moves back and wipes his mouth, admiring his handiwork. Deku's hole is stretched and soaking, ready for Katsuki's big, thick cock. Finally, /finally/, Katsuki pulls his aching cock out and rubs it to the +

sight laid out in front of him, before lining it up with Deku's entrance.
"Don't worry, baby," Katsuki purrs, massaging Deku's red ass cheeks. "We're almost done. But we can't finish without my fucking you into the mattress, can we? I'm gonna fill you with /so much/ cum, Deku."+

(maybe the tweet limit's sexually frustrated. If so, it should /get fucked/ and let me write smh)

Katsuki leans over Deku, turning his face to the side so that he's eye-to-eye with Deku as he pushes the wide tip of his cock into Deku's waiting hole. Fresh tears spill from Deku's eyes as he whimpers again, and Katsuki leans forward for a kiss, shushing him softly.... before +

ramming his hips forward and sheathing himself fully in Deku's big, fat ass in one smooth move. He must have hit Deku's prostate, because Deku's voice breaks in a useless moan as his hips jerk and he cums again. But the fun's just starting, and Katsuki revels in the buildup of +

tears as he starts to move, fucking in and out of Deku's sloppy hole with a wet squelching noise that accentuates Deku's crying. And then he picks up, moving into a rhythm that has Deku /sobbing/ underneath him. There! That's it, that's what Katsuki wants to see. He grins in +

triumph and swivels his hips, adjusting the angle so that he slams into Deku's prostate with every hard, deep thrust. His hips slap against Deku's ass, and Deku wails, tongue lolling out and eyes rolling back as he's pounded into the mattress as promised. His prostate is abused +

over and over and over again, and Katsuki grits his teeth as he starts to move close to his orgasm. Fuck, Deku's so tight, so wet, such a /good slut/ for him, and he tells the whimpering green-haired hero as much, growling in his ear. Deku's incoherent in response, his legs +

giving out and sliding wider as Katsuki fucks him within an inch of his life.
"Fuck, you're so fucking tight for me, Deku, gonna make me cum in your slutty hole," Katsuki grunts, thrusts growing sloppy as he uses Deku like a sex toy. "I'm gonna make you cum again, aren't I? Come+

on, baby... /Cum for me/."
Deku's hole clenches as he screams and cums once again, entire body shuddering before he goes limp, a wet, fucked out mess. The sensation and the sight of Deku's blissed, tear-streaked face sends him over the edge as he cums deep in Deku's ass. Once +

he's worked through his orgasm, he lays down next to the exhausted nerd, pushing the green hair plastered to his forehead back so that he can press a kiss against it. Deku looks so beautiful like this. Katsuki can't help the way his heart swells. He's gotten the sex... He +

shouldn't be so fucking greedy when he doesn't deserve it, but he /wants/ it, oh god, he wants Deku all for himself. Will he ever?
***
(The answer is yes, because when Katsuki confesses, the next day Deku squeals "Yes!" and bursts into tears as he hugs his new boyfriend.)
END.

...I really projected into this, huh? Well, that's day 3 done, and it definitely didn't take me two and a half hours or so... Please consider supporting me through this month by tipping me a Ko-Fi! I'll explain what I'm doing on Ko-Fi for kinktober next! https://ko-fi.com/lemonaestheticc 

Kinktober x Ko-Fi: Donate 1 Ko-Fi to be able to pick which kink I use on a particular kink (or whether I use them all)! Here's a masterlist of Kinktober donations and all the kinks through the month:
http://tinyurl.com/y9mb6bol 
Thank you for supporting me, everyone

A preview for tomorrow! https://twitter.com/lemonaestheticc/status/1312491561549066240?s=20