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It was second nature for Kirishima and Bakugo to share.
They’d been friends ever since their days in UA and they stayed thicker than glue — wherever one went, the other followed. That’s just how it was between them.
And when you came along, they did that with you too.
They followed you around, despite Bakugo’s complaints (yet he went anyway), and whatever obligations the both of them had - they followed you. Always.
It was when the two of them found out the other’s feelings that they made the compromise to share, albeit with some difficulty, and only if you were down for it too.
To their delight, you agreed. And thus was the start of your relationship being always together.
Firm hands pushed your legs up to your chest and your ankles to your ears, folding you in half and leaving your gaping pussy on display, clenching around nothing and waiting to be filled, to be used as it had before. To be stretched and split open on one—maybe even both—of the cocks in your sight, both leaking with precum and flushed red at the tips like they’ve been hung dry.
And they have, but you swear it isn’t your fault. It is theirs.
Kirishima’s cock slit down your folds, tip poking through just enough to snag your puffy clit, and both of you hissed. “God,” he breathed, voice shaky and unsteady, “please. Please let me put it in—fuck—I’m-I’m good, ‘m good, I swear,” His head hung right over yours and you could see it all in his face: his flushed cheeks, eyes that were all pupil and blown wide, the shakiness of his breathing. But he wasn’t talking to you, the three of you knew that.
“Told ya to wait,” Bakugo sighs from his position to your left, sitting in your special chair with one hand pumping himself steadily, “You don’t listen.”
It was for a second that you could see Kirishima’s resolve almost break and him almost giving into temptation. “Good boys listen, remember?” Bakugo breaks through, “Good boys get to fuck that right there,” he jerks his head toward you, pausing to take in the sight of your drenched sex, “Don’t they?”
Kirishima gulps and squeezes his eyes shut, and his hips rock a steady rhythm into the air, “Y-yeah, they do.”
“Good,” Bakugo’s voice sounds pleased, and he settles back in his chair, “Go on.”
He continued like that, rutting his hips between your wetness and keeping his eyes squeezed shut, leaning his forehead down on your chest despite how he towered over you. All he wanted was to sink inside you, and have his thick cock press into you and mold you to fit him; to feel you clenching and hear your keens and sounds that only the two of them can pull from you—but no. He had to be good.
“B-Bakugo, ‘m gonna cum,” Kiri’s movements got more reckless and needier, eager to keep snagging your clit to pull those saccharine-like sounds from you, mixing the sounds of your pleasure with his own. “’M gonna—“
“Not yet,” Bakugo gave his own cock a squeeze and grit his teeth. “Together.” He watched as Kiri’s hips stopped instantly, listening to the command he’d given him, but his eyes were especially drawn to the way Kiri’s cock twitched and pulsed, pre-spend oozing from the tip that was red-hot.
He watched as Kiri continued to move his hips, gritting his teeth as if he were in pain, with hungry eyes. You moved as best as you could with him, fingers resting on the undersides of your thighs and pressing into the flesh. Bakugo watched the way you two looked at each other, beads of sweat rolling off your bodies and eyes full of need and want, desperate to get what you wanted but obedient enough not to disobey him. Good.
Red eyes stared, looking on while Bakugo rutted into his hand, tongue darting out to lick his dry lips.
“Kirishima,” Bakugo’s voice sounded over your needy gasps and pleas for him to go faster, “Put it in ‘er.”
At his words, you felt Kiri’s tip slot at your entrance and push. It wrenched a gasp from you like you’d just been punched, stealing the breath right from your lungs. It stung, it burned—the feeling of him stretching you—but it was amazing. Kirishima’s incoherent babbling drowned in your ears, him telling you how good you feel and how you’re so warm around him, squeezing him so good and taking him like a champ—
“’M sorry, ‘m not gonna last long,” The words tumbled out of Kirishima’s mouth as he settled into a harsh pace, hips pushing forward and cock driving into you with reckless abandon. His muscles flexed and his grip on you tightened to the point where he was nearly shaking, heavy balls slapping your cunt with each hard thrust.
Kirishma’s hand slipped from your ankle to your clit, rubbing circles in it to bring you to where he was; close and feeling ready to burst. Two quick ones sent you falling over the edge and Kiri’s name was pulled from you repeatedly, over and over like a mantra. You called for him needily, desperately, as he fucked you through your body-shaking orgasm, up until he joined you, cock spitting hot and thick cum into your warm and wet cunt. There’s so much of it too, there always is—he always filled you to the brim, and it overflowed, dripping down your ass and pooling onto the bed below you.
“Wastin’ it,’ Bakugo mumbled, moving in to scoop it up, after Kiri slipped out of you and shifted to your side, relenting his grip on your ankles. Bakugo replaced him, rubbing his thumb over the head of his cock and slipping right into you with ease, relishing in your over-sensitive whines and cries.
Soon enough, he had you teetering over the edge again; if not for the intensity of his thrusts, then for the lewd squelching sounds the two of you made, thin strings of cum connected between his hips and your own.
“S’fuckin’ good,” He grunted, hands curled behind your knees, “S’fuckin’ good, baby.”
“‘Tsuki, m’ gonna cum,” your hands squeezed his forearms, digging crescent shapes into them.
“Yeah? Cum on my fuckin’ cock then,” Katsuki said and Kirishima’s hand came up to flick your clit, both sending you tumbling to your orgasm. Breathtaking, just like the first one, and neither let up—not until he was done, like he always told you.
“Squeezin’ me,” He huffed, giving you two more body jerking thrusts of his hips before he emptied inside you, twitching violently between your walls.
You three were tired, but that didn’t stop Kiri and Bakugo from checking over you, ensuring that they weren’t too rough and that you weren’t in any pain.
It took the form of Kirishima giving you soft kisses and gentle praises, Bakugo cleaning the three of you up, and leaning down to give both of you a kiss on the lips. And then, after hopping in for a long shower (and a second-round), you ended the night in each other’s arms, together.