Continuation of this Mind Reader!Katsuki thread because I have no control and the concept is too juicy: https://twitter.com/Tsuki_the_Wolf/status/1244010990204837888
CW: NSFW stuff

It was in their second year that Izuku's thoughts turned towards a darker edge when it came to Katsuki. He was a confident boy who did excellently as a hero, but Katsuki could see that when it came to this he was self-conscious and just a teenager.

He was like a puppy when it came to Katsuki's attention, but when Katsuki turned his gaze away he could hear how Izuku's thoughts turned to longing and then to sorrow at his unrequited feelings. He beat himself up over just not confessing. Katsuki wanted to shake him.

He really wished that Izuku would just do it already. God knows Katsuki sometimes felt like they were in a relationship with the number of times Izuku's daydreams had mentally fucked him up.

It actually got to the point that Katsuki not only knew Izuku's kinks, but Katsuki himself had discovered new sides to himself. By second year, Katsuki was coming to the understanding that if there was anyone he liked it was probably Izuku. He made him feel hot and attractive.

He found himself mentally giving Izuku a kick in the ass whenever he worked himself up to confess to Katsuki and then would give up before he did. It was always with the promise that he would definitely do it next time. He had heard that countless times.

So Katsuki decided that a new step needed to be taken. He began to really use his mind reading ability to his advantage in his daily life.
Teasing Izuku was easy and quickly became Katsuki's absolutely favorite game. The innuendos he would use would drive Izuku wild.

"Damn." Katsuki might say when he was helping Izuku stretch. "You're flexible as hell, Deku."

"I'm very flexible!!" Mental Izuku would scream, crying and waving his hand at the praise. "I can bring my knees to my ears! DO YOU WANNA SEE?! I'LL SHOW YOU, KACCHAN!!"

Izuku's face would only turn a little red and smile at the compliment. "Thanks Kacchan." Katsuki had to try his damndest not to laugh at the difference between Izuku's inner thoughts and how he presented himself. It was almost impressive.

His favorite thing to do was to get a little more physical. He was flirting and he knew it, but Izuku was so wrapped up in himself and his confusion and doubt to realize. His mental self was an endless source of entertainment.

It wasn't that different with the other people around them, though. Their inner thoughts tended to be at least a little different from how they presented themselves. Mineta's mind was the absolute worst, but Katsuki had heard some nasty shit from Kaminari too.

The shocking one was definitely Uraraka's mind which seemed innocent until she was thinking about if she had enough money to buy the toy she had been hoping to get. With plans to think about Izuku while using it. Or sometimes Katsuki. Hell, even one time Asui.

THAT was something Katsuki wasn't going to touch with a 12 ft pole, but good on her, he supposed. It had been interesting hearing that. But Katsuki knew many secrets about his classmates that they would probably never say out loud.

There was a night that the boys of Class 1-A were hanging out in the common room because all of the girls were upstairs having their own little party. It had been casual - snacks, discussions of school and internship, hobbies - and then it took a different path.

"What kind of porn you guys got? C'mon, we can't all be vanilla here."

Katsuki couldn't remember how they got on the topic of porn, but mental Izuku's absolute scream of horror when it was his turn to answer had Katsuki's mind spinning from dizziness.

"U-Uh-Um-!" Izuku's face was bright red. His mind was rapid-fire jumping through various sexual scenarios he had imagined Katsuki in. Including jerking it to videos of Katsuki in action while doing hero work. "I-I don't-"

"Don't give us that!" Kaminari said.

"Dude, at this point we've all been through a ton of shit. We aren't gonna judge you." Sero added.

"I-"

"This is very inappropriate!" Iida attempted to save his friend.

"It's just porn." Todoroki said, sounding a little bored.

"Dude you barely even look at that stuff." Kaminari pointed out.

"I've seen a lot of stuff, though." Todoroki said. Then his mental self added, "After all, I have to send an eclectic amount of porn to my father using his credit card."

The image of Todoroki sitting at the computer with some kinky ass porn and typing in his dad's credit card number appeared.
Katsuki stared at him and almost laughed. Holy shit, he may actually need to become friends with Todoroki. That's fucking hilarious.

"C'mon. How about we ask your best friend then?" All eyes turned to Katsuki instead. "How about it, Bakugou? What shit turns you on?"

Izuku's mind went abruptly silenced and focused. Katsuki, however, was paying more attention to his classmates' opinions of him.

There was a lot of sado-masochism in there. Wax play. Images of angry jerking off until they forced their thoughts away from that. It was irritating to listen to. Without Izuku's constant stream it was like everyone else's voices were louder.

"I don't." He said bluntly figuring he could humor them. Besides, he wondered if Izuku would actually confess something if he did.

"BULLSHIT!" More than a few of the guys said in response.

Katsuki scowled. "I don't have any goddamn porn."

Katsuki's eyes jumped to Izuku and met his eyes. They held before he dragged his eyes back to the others. Shockingly enough, Todoroki was the only one who caught and understood the look. Things clicked into place for him. Izuku, however, became very confused.

After all, he had jerked it to picturing what Katsuki would jerk it to. His mind was flitting with his guesses of Katsuki's kinks. Katsuki wished he wasn't as shocked as he was that Izuku actually guessed a good number of them. The shit was too attentive to him. Little stalker.

"I don't have a need for porn." He finally said, and he wasn't lying. Izuku provided him plenty of material to think about. And honestly being around his friend with his blue balls was enough to keep Katsuki's own libido - weak though it was - down quite a bit.

The rest of the boys found disbelief in that statement. Mental Izuku just slammed his fists on the ground and cried, "WHY ARE YOU SO INNOCENT IN THIS SENSE, KACCHAN?! I CAN'T GET ANY MATERIAL OUT OF THIS!!"

Katsuki firmly ignored the crying.

"Your turn, shit nerd." He looked to Izuku again and waited.

"You didn't even give an answer, Kacchan." Izuku protested, still looking terribly embarrassed.

"I did answer. Just because I don't go looking for shit doesn't mean I don't have an answer."

"You're telling us you seriously just use your imagination?" Sato asked with doubt and somewhat impressed.

"Not my imagination." Katsuki said vaguely. He was kind of tired of this nonsense. "So? Deku?"

"Don't pressure me!" Mental Izuku whined. "Why is Kacchan being so pushy? Is he really that interested? Should I come out? I don't think they'll mind it. Well, maybe Mineta-kun. But if I say it, will that maybe increase my chances with Kacchan? I could find out his sexuality."

Was that what was holding Izuku back? He didn't think Katsuki was interested in guys? Well, that was fair. Katsuki didn't show interest in anyone. He didn't have to worry about doing so. He knew who liked him and who didn't. He didn't have to play around unless it was fun.

"I..." Holy shit he was going to say it. "I... like... different things."

"Different how?" Surprisingly enough, Iida was into the conversation now. Probably because it wasn't his turn.

Izuku's face was bright red. "I like... girls... and guys..."

His eyes darted to and away from Katsuki, worry tainting his inner voice thinking he was being judged. The people around them did actually judge Izuku, but they were nice enough to not say some of their more questionable thoughts out loud. Izuku was well-liked after all.

Katsuki raised an eyebrow at him and scoffed. "I knew it."

"You knew it?!" Izuku cried with shock.

"Of course I did."

"Well, that's childhood friends for you." Koji said with a shrug of his arms.

"That ain't it." Katsuki said, somewhat bored. "It's because I'm a mind reader."

That made everyone stutter in their thoughts. Then only confusion filtered into the air like a cloud.

"Hah?" A couple of them said.

"Oh, I remember Kacchan used to say that a lot when we were kids. He still does that?" Mental Izuku said.

"That's because I was telling the truth, stupid Deku." Katsuki snapped at him. "It's not my fault you idiots never believed me."

Izuku positively froze, eyes widening with shock. The rest of the class looked to them both. That was when Katsuki realized Izuku hadn't said that out loud. Well, it wasn't like he wasn't being open about it anyway.

"K...Kacchan?" Mental Izuku whispered, crawling towards him.

Katsuki stared the mental image of Izuku down as the boy got in his face and searched him. "Can you hear me? For real? Can you tell me what I'm thinking about?"

"You're thinking about me, Deku. You're /always/ thinking about me." Katsuki told him.

It had the opposite effect of what Katsuki wanted. Izuku's mind flashed back to everything he had thought about Katsuki, smart enough to reevaluate many of their interactions with the new understanding that Katsuki could read minds.

Then he remembered his lusty thoughts.

Izuku panicked and panicked hard. The others in the class began to bombard Katsuki with questions as Izuku fled instead of staying to confront anything. His mental self only screamed in horror. Katsuki slapped at hand to his face. Goddammit, that didn't go well.

Class 1-A became aware of the fact that Katsuki was a mind reader. No, he couldn't turn it off. Yes, he knew those secrets they didn't want him to know because they fucking thought about them in order to ask him that question. No, he won't fucking share the secrets.

No, Izuku clearly hadn't been aware. Yes, he uses it during battle obviously idiots because he can't /shut it off/. No it's not registered as a quirk because it's not a quirk.

This was exhausting. Izuku hadn't talked to him since.

In class Izuku forced himself to be distracted. He would remind himself not to think anything weird. He was convinced now that Katsuki was disgusted with him. He apologized many times in his thoughts to Katsuki, and then reminded himself that Katsuki could fucking hear him.

On and on and on this cycle went. Katsuki grew tired of it very, very quickly. It only took him two days before he hunted Izuku down, grabbed the boy by the shirt, and slammed him down to the ground at night in the yard of the dorms.

"K-Kacchan!" Izuku cried.

"I've heard every single one of your fucking fantasies about me, Deku." He decided to clear everything up right away. "I've seen how you wished I would fuck you. How you look at my ass. How you wish I would shove my dick down your throat." Izuku paled with horror.

"I've seen every single time you pictured me fucking you after we sparred. I've heard you wish I would pin you to the wall and kiss you until you couldn't fucking breathe. I've heard how you've jerked yourself off and fingered yourself imagining it was me. I've heard it all.

And you know what? Yeah, it was gross as fuck at first. You know how many goddamn times you've mentally molested me? How fucking distracting it is to listen to you daydreaming about sucking me off in the middle of class and how naughty it would be?" He scowled at him.

Izuku's mental self was tiny on the ground next to Izuku. Both of their faces reflected the urge to die. Neither of them spoke.

"But I got used to it because I know the difference between thoughts and actions. Your thoughts are things you can't fucking help. You didn't know.

But the thing I can't forgive - the thing I CANNOT FUCKING GET OVER - is how much of a goddamn COWARD you are!" He punched the ground next to Izuku's head, making the boy flinch. Katsuki panted a little with frustration.

"You can daydream about how much you want me to kiss you and fall in love with you all you want, but you don't even have the goddamn balls to tell me?! What's with all of that fucking chickening out?! I waited for you to say something. I fucking flirted with you, idiot!

I don't like using my fucking mind reading to manipulate people, you hear? So why don't you finally MAN THE FUCK UP and just goddamn say-"

"I love you." Izuku whispered. The tears that had built in his eyes ran from the corners and into his ears. Katsuki shut up.

"I love you, Kacchan. So much. I don't know when it happened-"

"You've been in love with me for years." Katsuki said, his voice calmer. "You just didn't notice. You gave yourself away to me, though. I didn't realize until you started wanting my body so much."

Izuku gave a sob, hand coming to his mouth. He continued, "I've been in love with you for years. Please... Please go out with me!"

"Even if you say no," Mental Izuku added with hope and sorrow in his voice at the same time, "Please don't stop being my friend."

"Stupid." Katsuki said, his voice softer than it usually was. He wiped at Izuku's tears as the boy blinked at him. "I ain't gonna stop being your friend over this stuff. If I was, I would've done it last year."

"Oh, right." Mental Izuku said.

Katsuki pulled the boy to sit up, and then he kissed him. Izuku's mind came to a stop - blissfully silent - before Katsuki heard a tiny, "Kacchan" breathed with happiness from Mental Izuku.

Katsuki didn't bother with words. He took his time kissing Izuku and getting his fill.

Izuku was happy to keep him there. His inner voice was even more fascinating like this. Tiny whispers of Katsuki's name flittered from mental Izuku's lips. He gave away what did and didn't feel good. And Katsuki adjusted until he heard a quiet, "Perfect."

Once he was thoroughly kissed out, Katsuki pulled back. His lips kind of stung, but he liked it. Izuku looked dazed. Katsuki wiped at his own bottom lip with his thumb to remove some excess saliva. He was rather proud of his handiwork. And the erection pressing to his ass.

"Now then," he said with amusement, "lets get to your room and use all of those damn condoms and that lube you've saved for the days you want a really good orgasm, huh? It's about goddamn time you get actually fucked so you can calm the fuck down in class and I can finally focus"

Izuku didn't have a complaint about that other than a small worry about having sex in the dorms. Katsuki only bit his ear softly in response to that. "Then I can just gag you to shut you up. Just like you'd always dreamt of."

"I really don't have secrets from you." Izuku said.

"No, but that's alright. Very few people do. Take advantage of it." He paused and then added, "I ain't doing anything in the classroom, though."

"Th-Those were just fantasies!"

"Time to show you that the real thing is better anyway. Let's go."

"Okay, Kacchan!"

(End!)

(Commissions open! Tips and bribes are welcome! https://twitter.com/Tsuki_the_Wolf/status/1234627823769411584)

https://twitter.com/Tsuki_the_Wolf/status/1265403731702616068