The Switch. [Barbarian Izuku x MHA universe Katsuki]

Part 1 (Smut.)

Katsuki arches his back, relishing in the feeling of Izuku's tongue circling his hole just right. "Fuck, right there," he whines. 

Izuku continues more enthusiastically, eliciting a desperate moan from Katsuki. Katsuki pushes backward, hips following the delicious movements of his boyfriend's tongue. Izuku leans back for a moment, amusement heavy in his voice.

 "You're so..." he trails off. Katsuki looks back, an eyebrow approaching his hairline. "I'm so...what? Desperate for you? Yeah. You're fuckin' right." He watches something dark pass in Izuku's eyes. "For me only." He says it like a command as if he had to ensure Katsuki knew and believed it. "Yeah, all yours 'Zuku, only yours," the blond confirms lowly. 

Heat zings through Katsuki's body at the thought of being possessed and Izuku being possessive over him. He wants that, wants to belong to only Izuku. And he does, has for a while now. But the constant confirmation of who he belongs to, who gets express right to touch, hold, and fuck him, is enough to make his cock throb and leak pitifully onto the sheets.  He groans weakly as desire overtakes him, making him /need/ Izuku to the point of pain. 

"Please fuck me." He's close to begging, but not quite there yet. He knows Izuku will give him what he wants just by asking for it. He doesn't answer, he just lets his tongue breach Katsuki's fluttering hole. Katsuki's eyes snap shut.

"Right there, Izuku, keep doing that!" Reaching down he tangles his fingers in Izuku's green locks. He's so lost, he doesn't even notice when the hair in his hands becomes more coarse. Or when there seems to be fur tickling the back of his hand.

It's not until there's a guttural groan ringing out against his ass that Katsuki even opens his eyes. When he does, he's met with a sight he doesn't understand. He rolls away, going on the offensive, hands popping with the force of his quirk.

He's backed himself into a corner, body poised to strike as familiar but unfamiliar deep green eyes stare back at him with the same guarded curiosity that his own face is undoubtedly portraying. Katsuki's heart pounds in his chest, eyes roving over the tall figure.

It's Izuku, but not. He's got the same burly figure as Izuku, same freckled face, green eyes, and spring green curls. But there are differences. For one, the man is stark naked save for a long viridian cape. Fur lines the edges and it sits comfortably tied around his shoulders.

His scars are in the wrong places too. He has more than Izuku does on his hands and arms, different ones on his chest that appear to have been done as a means to count /something/. What that something is, Katsuki leaves for his own imagination later.

Words: 464

Hope you enjoyed part 1 as much as I did doing it!