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The ring of Izuku’s phone is unexpected. It’s nearly 1:00AM and he’s exhausted— been catching up on grading papers, and all he wants is to sleep, but the name lit up on his screen is the only one he’ll click the green ‘answer’ button for at an hour like this. So he does, lifting the phone to his ear with a soft smile.
“Kacchan? Aren’t you usually asleep by now?” Izuku asks curiously.
The breathing on the other end sounds unusual. A bit heavy and ragged, like he’s just finished working out or… Izuku’s brain supplies him with other things.
“Shit,” Katsuki rasps. “Fuckin’ …Didn’t think you’d actually pick up. Why're you awake…”
“I was up late grading papers,” Izuku tells him, running a hand through his hair. He can’t help but feel worried about Kacchan with him sounding so out of the ordinary. He’s on a rescue mission for about a week with Shoto and Kirishima, and it’s a very high-risk and dangerous job— Izuku’s been worried sick about him ever since he left for it, and asked Kacchan to make sure he updates him on his whereabouts and well-being the whole time he’s away. “Is everything okay, Kacchan?”
“Mm, ‘m fuckin’ fine. Y’ worry too much,” Katsuki says. An odd strangled sound leaves him. “What’re ya doing now?”
“I was just going to bed. Are you sure-“
“Jus’... tell me about- tell me about your day, er somethin’. Wanna hear your stupid voice.”
“I—o-oh? Well, um…” Izuku’s heart flutters— and his stomach sinks, groin growing hot with that familiar arousal only Kacchan can affect him with. Izuku’s been hopelessly in love with his best friend forever, and he can’t say this late night phone call is helping him get over him. “M-my day was pretty normal,” he laughs lightly, “Sorry to disappoint.”
“Don’ care,” Kacchan breathes out, “anything. Jus’… tell me anything.”
All the gears in Izuku’s head click right into place. Katsuki’s talking strangely, slurring his words… And Izuku happens to know he and the others had hit up a bar earlier after their long day at work.
“…Are you drunk?”
“Nno. Not. Don’ get fuckin’ drunk.”
“Yes you do, Kacchan.”
“Hah—ohh. S-say my name again,” Katsuki mumbles.
Izuku’s eyes go wide.
Heat creeps up his neck, his brain screeching to a halt, heart pounding in his chest. He squeaks, “A-are you…?! Kacchan, are you m-masturbating?”
“Fuck. No, sshhhaddup. Mngh… okay, a little.”
Izuku can’t believe his ears. Kacchan will flip his lid in the morning if he remembers this! “I-I think you should hang up the phone! I’m sure you called me on accident, or— or meant to call someone else. You’re r-really drunk.”
“Not an accident,” Katsuki says, it sounds like through gritted teeth. “Always get off t’ you, stupid Deku… only you.”
Against his will, Izuku whimpers. “Y-you do? To me? L-like… pictures?” He asks hesitantly, voice wobbly. No, he shouldn’t take advantage of Kacchan’s drunken state to ask him about what he masturbates to, oh god. But… He’s so warm all over, quickly getting more and more turned on, from just the rasp in Katsuki’s voice, those ragged breaths, knowing he’s touching himself to him…
A guttural groan on the other end. “Yeahh. Fuckin’— all those photoshoots you do. Shhiit, you’re so hot, Deku. That fucking ass. Your stupid legs, your fucking waist, ohh god.”
A pathetic, pitched whine comes out of Katsuki and Izuku releases a shaky exhale, swallowing before slowly reaching down his pajama pants. It’s not his fault. It’s not like it’s wrong that he’s about to touch himself to Katsuki’s voice on the other end of a phone call. Katsuki did it first anyway.
“You think…” Izuku mumbles, “You think my photos look good…?”
Izuku always felt insecure about those photo shoots. He’s done a handful of brand deal shots ever since Katsuki gave him the mecha suit and he started doing hero work part-time— he’s sort of built a reputation as Japan’s sweetheart, and apparently women are into it, so he gets a lot of offers to do fanservice. It makes him feel shy, but it does help his ranks.
He just never would have thought Kacchan of all people would have thought anything of them, let alone… this!
“I th-think youuu look good. Deku. Always look good,” Katsuki slurs out.
“H… how long have you thought that?” Izuku asks. His thighs tense up when he finally touches himself, slowly rubbing over his briefs.
“Since fucking high school,” Katsuki answers. “Always was into yer dumbass. Remember wanting to fuck you stupid every time we were alone in the locker room. I fucking—every time I jacked off I had to think about your shitty face to cum.”
“You want to…” All this new information is making Izuku dizzy, “f-fuck me…?”
“Ohhh, my god—fuck. Hearing you say that. Shit. Yes, yeah, I really wanna fuck you, Deku. You got no idea.” Katsuki whines. Izuku can hear him beating his cock, the wet noise filling the background. It makes him drip with arousal. If he wasn’t before, Izuku is completely soaked now. He can feel it through his underwear.
Finally, he slips his hand under. “I-I would let you,” Izuku says quietly.
Katsuki full-on moans. Izuku hears his fist pick up speed. “Yeah? Really? You want that?”
“I want it,” Izuku says, “really bad.”
“Shiiiiitt—shit, shitshit. I’m—Fuck, Deku. You’re g’nna make me fuckin’ cum.”
“I-I want you to. I’m also…” Izuku trails off, swallowing shyly.
“Oh my god,” Katsuki breathes, “Are you touching yourself too.”
“Umm… yeah.” Izuku gulps, guilty. “I just, I—“
“‘S okay,” Katsuki says. “Tha’s really hot. I wanna hear you cum. Oh god, can’t wait t’ see you.”
“I wish you were here to… um.” Izuku trails off, biting his lip shyly.
Katsuki groans. “C’mon, use your words, baby. What do you wish I was doin’ to ya?”
Oh shit. Baby. The pet name makes Izuku shudder a breath, even more arousal gushing out of him— he whimpers, desperately increasing the speed of his fingers, face scrunching with pleasure. “I wish you were… t-touching me.”
A shaky exhale leaves Katsuki as he tightens his grip on his dick and grits his teeth. “Where?”
“My… my uh—“ Izuku’s voice gets quiet, “p-pussy.”
“Fuck…” Katsuki moans. “Yeah? You wish I was playin’ with your pussy right now, baby?”
“Mm-hmn…” His eyelids flutter. “Need Kacchan… Need to feel Kacchan.”
“Damn it. Holy shit, Izuku. I miss you so fuckin’ bad. Can’t wait to fuck you when I get back.”
Izuku closes his eyes, head tipping back. “Me neither…” He whines.
“‘M gonna fuck you so good,” Katsuki’s breath comes out in rough pants.
Izuku imagines it: Katsuki above him, sinking slow into his slick cunt inch by inch. He knows Katsuki’s huge— he’s seen it, briefly, in locker rooms and has seen the print in certain fitting pants— although he was always too shy to look for very long. He can only imagine how good he’d feel inside him. He’s indulged in fantasies before, about Katsuki fucking him— slow, fast, deep. About sucking him off. Getting his throat fucked by him. Kacchan’s so rough. He can be tender, but ever since high school Izuku’s been into the brash side of him. He might be in love with him, but the thought of Katsuki absolutely destroying him, using him for his own pleasure like a toy, branding him with his palms— it’s all so fucking hot. Izuku can’t help but want it.
“God, baby. ‘S unreal what you do t’me.” Katsuki moans gutturally and Izuku imagines him rocking up into his own fist, shirtless and flushed, shiny with sweat. Oh, god. “So fuckin’ hard.”
“Ah… I-I’m really w-wet,” Izuku says bashfully, and hears Katsuki inhale sharply through his nose. Izuku moves his phone close to his cunt so Katsuki can hear the wet sounds of him touching himself.
“Ohhhh, oh my god—yeah, that’s it,” Katsuki whimpers. “Fuck, you’re so good. So—oh, shit. You make me so hard. Wanna be inside ya so bad, fuuuck. Wanna feel your wet pussy.”
“M-me too. Want that too, Kacchan,” Izuku says, voice pitched. He’s close.
“Yyeaahh,” Katsuki whines. “How, baby? How d’ya want it?”
“H-hard,” he says. “I want Kacchan’s hands on me. I want them to leave b-burns.”
“Fffuck, yeah? You into that? Want everyone to know you’re—fuck—mine?” Katsuki says.
Izuku whines, needily shoving two fingers into his pussy— it’s not enough. He wants to be filled, he wants to be filled with Katsuki. “Yes,” he whispers. “Wanna be Kacchan’s. Really bad.”
“Fuck. Fuck, Deku, say it again. Say you’re mine. Say you’re Kacchan’s.”
“I’m yours,” Izuku says. “All yours, K-Kacchan—nnh.” He’s about to cum, oh god. “Hah, I’m really close. I w-wish you were inside me. K-Kacchan’s so big.”
Katsuki beats him to it. “C-cummih—ohh, shit- cumming, Izuku—“
The noises Kacchan makes send Izuku to heaven. He’s only ever heard such amazing sounds in his wildest dreams.
“Ah,” Izuku moans, eyes rolling back. “Me too, mmmh—Oh-“
“Fuuuck,” Katsuki swears, voice cracking. “I wish I was there. Wanna fuckin’—kiss your stupid face while I make you cum everywhere.”
“Hah—Ka-Kacchan—hhnng!”
“That’s right, baby,” Katsuki rasps out, “Say my name, beg for Kacchan—ffuuuck, oh my god, Izuku.”
“Kacchan,” Izuku breathes, voice croaky. He’d cum so hard. When he pulls his fingers out of his pants, a string of his sticky cum is still attached. That was one of the best orgasms he’s ever had—he can only imagine what it’ll be like when he finally gets Kacchan for real. “Oh, wow.”
“Mm. ‘Zuku, you’re. You’re fucking amazing,” Kacchan says sleepily on the other end. Izuku wishes he could hold him now, and pet his hair as they fall asleep. He misses him so badly.
“Promise you’ll call me in the morning,” Izuku says quickly, chest filling with anxiety. “Promise you won’t f-forget about this.”
“Baby, that was unforgettable. Don’ worry,” Katsuki says. “When I get back, you’re alllll mine.”
“I already am,” Izuku says softly.
“Good… boy…” Katsuki says, dozing off. Izuku smiles and waits for his breathing to fall into a steady rhythm.
“I love you,” he whispers, before hanging up the phone.
end. ｡𖦹°‧