Did someone say smut?
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crystallization by precioushearts
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
27 Jul 2026
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Summary
Crystallization
/ˌkristələˈzāSH(ə)n/
nounThe psychological process of idealizing a romantic partner.
——Izuku watches him for a while.
Katsuki refills a vodka tonic, swaps an empty glass for a fresh whiskey sour, pours a perfect old fashioned with the most beautiful orange peel twisted around the rim that the guy ordering barely even looks at, doesn’t even appreciate, before knocking back.
He doesn’t talk much, Katsuki. Asks the necessary questions and gets to work. Doesn’t play therapist to the wallowing ones. He’s exceptionally efficient, good with his slender fingers, works a pairing knife and a shaker well. Stirs without spilling. He free pours the liquor, uses a little trick with his fingers tapping on his thigh to count the ounces.
Izuku gets the impression he likes precision. Probably born that way. Too good at being perfect to accidentally be anything less.
Mm. That sounds about right.
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movie nights (and chill) by rainy_writer
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
22 Jun 2026
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It's Katsuki’s first time being eaten out, fingered, and thoroughly ruined by a Midoriya who has been planning this for months.
The usual domesticity.
“Have you ever—” Izuku starts, his voice quiet and careful, and he doesn’t finish the question, but Katsuki knows what he’s asking from the tentative way Izuku’s finger rests at his entrance, not pushing deeper, just present.
“No,” Katsuki says, and the admission comes out smaller than he intends, and Izuku goes still against him, his finger stopping entirely.
“No?” Izuku repeats, and there’s genuine surprise in his voice, and something else underneath it that Katsuki can’t place.
“I’ve used my fingers,” Katsuki says quickly, defensively, because the implication that he’s completely inexperienced is worse than admitting the truth. “On the outside. I’m not — I know how to—”
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morning rituals by rainy_writer
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
27 Jun 2026
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“Get your horny ass away from me,” Katsuki hisses, pushing at him again, both hands against the hard meat of Izuku’s thigh. “I swear to fucking god, I’ll break your nose.”
Izuku doesn’t budge. He lets out a shaky exhale against the back of Katsuki’s neck, lips brushing sweat-slick skin, and Katsuki feels it land on every nerve he has left.
“I’m trying,” Izuku mumbles, voice too warm, too breathless. “But you keep squeezing me like that, Kacchan. I can’t think.”
Katsuki snarls through his teeth and shoves again, his palms slipping against Izuku’s skin from the sweat clinging between them. “You’re not thinking, you’re fantasizing about knocking me up—”
Izuku groans, deep in his chest. “You said it first.”
“That was not an invitation, dumbass—!”
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Spilled Milk by battlelust
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
11 Jun 2026
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Summary
The gentle pull on his green tie brought Izuku back to reality.
"You need me to help ground you again?" Kacchan whispered, intense ruby eyes trembling as they studied Izuku's face for a reaction—the same way they always did when he asked this.
The implication sent a feverish electric shock all over Izuku's tan skin, erupting the surface in goosebumps.
Kacchan and him have a… weird way of helping each other, to say the least.
Or: Izuku is overworked, burnt out, and insecure over being a hero. Katsuki helps him emotionally regulate through unconventional means.
Or, or: Katsuki clicker trains Izuku until he believes he's the best hero
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blow out the candles by spicycely (pizzanut)
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
15 Jul 2025
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Summary
Katsuki snorts. “You want me to bully you while you fuck me?”
Izuku whimpers.
Katsuki grins, wide and wicked. “Damn. Should’ve figured. You were acting like a kicked puppy every time I said anything even mildly aggressive.”
“I like that,” Izuku mumbles, face in his hands now.
Katsuki pulls his hands away from his face. Just enough to kiss him, short and warm.
“Okay, you stupid fuck. I can be mean while you blow out my hole like a birthday candle, sure.”
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Izuku has one birthday wish: for Kacchan to be mean in bed.
Katsuki exceeds expectations.