MHA Oneshots

KiriBaku Smut ABO

"B-Bakugo, you don't understand!" Kirishima squeezes out, panting. "No, Kiri-... Eijiro. I understand." Bakugo promises, locking the door and pulling his shirt up and off him. He'd discussed limits with his lover many many times before, this would just be the first time Kirishima was in rut while they did it. "How much do y-you care about your clothes?" Kirishima asks tensely, shoving all his off. "Not at all, wh-" Kirishima cuts Bakugo off by jerking him forward and ripping the remaining clothes off him. "There you go- ah~" Bakugo moans as Kirishima shoves him down on the bed, grabbing his waist and yanking it up. Bakugo is soaking wet, ready for Kirishima.

"Fuck Katsuki." Kirishima groans, shoving his cock into Bakugo impatiently. Bakugo arches his back for Kirishima as he starts pounding into the omega. "Mine." Kirishima growls, leaving bites and kisses everywhere he can reach. Bakugo blushes darkly, used to the sex and pleasure but being put under possession completely new... and almost heart warming. "S-see? I can handle you~" Bakugo groans as Kirishima digs his fingernails into the blond's hips, jerking him back in forth just in time to his thrusts. Kirishima's alpha side takes over completely and he essentially uses Bakugo, handling him like an outlet for his knot and a hole to use for pleasure.

Bakugo obviously doesn't mind, trying to keep his back arched and propped up at a good angle, completely focused on pleasing his alpha. Bakugo whimpers and moans, trying to grip the bed sheets to maintain some form of securing himself. Kirishima moves one hand to grab a handful of his omega's hair, jerking him back slightly. Bakugo moans and his legs start to shake as Kirishima slams into him. Kirishima growls as he's forced to slam only part of his cock into Bakugo, knot getting too large to simply slide in and out. "I-I'm gonna cum, Kiri!" Bakugo moans and Kirishima growls.

"Not until I do." He snaps, moving both hands to grip Bakugo's hips tightly and slam his knot into the blond. "Fuck!" Bakugo moans and comes as Kirishima fills him with cum. Bakugo whimpers and relaxes as Kirishima runs his hands up and down Bakugo's back and sides. "You're such a good little omega, pleasing me. Is it praise you want, baby?" Kirishima asks, leaning down to press kisses against the nape of Bakugo's neck. Bakugo wouldn't dare tell his lover what he really wanted; the redhead's mark on his neck.

Bakugo just nods, still panting. "You seemed to enjoy when I called you mine. Are you my good little omega?" Kirishima coos and Bakugo shivers. Thats exactly what I want, to be yours. He thinks as Kirishima nips at a spot between his shoulder blades. Kirishima's thoughts are shockingly similar; Let me mark you, just say the word. Kirishima starts gently tugging out, his knot coming out of Bakugo with a soft pop. Kirishima pushes Bakugo to lay on his back and presses gentle kisses all over his chest and tummy. Bakugo notices with fond accuracy that Kirishima is in control over his alpha side so he's gentle, letting Bakugo calm down before a more soft round two.

Bakugo hesitates before grabbing Kirishima's face softly and pulling him up for a kiss. Kirishima blushes at the blond's carefulness, easily taking dominance in the kiss as Bakugo willingly submits. Kirishima pulls away with a lopsided grin. "Actually submitting easy for once? What's the special occasion?" Kirishima teases and Bakugo rolls his eyes even though he's smiling from the redhead's goofy grin.

"Hey, you're in your rut. Figured it'd feel better for both of us to let the primal side take over for once." Bakugo says and Kirishima kisses his neck, making the omega shiver at how close he is to the claiming area. "I know your omega, you were still in control." Kirishima says lowly, making Bakugo's back arch and a whimper escape at that voice. Kirishima laughs and kisses his cheek. "There he is." Kirishima teases and Bakugo rolls his eyes. "Bet I could bring your alpha out." Bakugo mumbles and Kirishima cocks his head curiously. "I'd like to see you try, baby." Kirishima says and the omega laughs.

Bakugo whines as he grabs Kirishima's shoulders, arching his back and pushing his hole against Kirishima's cock, eyes rolling up. "K-Kiri, please~" He whimpers and Kirishima's eyes widen before darkening slightly. Kirishima grabs Bakugo's hips and pulls him tight to his own. Bakugo smirks. "Told you." He says cockily and Kirishima wraps a hand around his neck. "You win this one." Kirishima admits, trying to push his alpha side down but his rut making it harder. "I can tell you're struggling, just fuck me and get it out of your system." Bakugo offers and Kirishima kisses his forehead.

"Thanks, baby." Kirishima says, letting his alpha take control. He groans and slides his hard cock back into Bakugo, rocking in and out. Bakugo tilts his head back and groans, covering his mouth so he doesn't basically scream. Kirishima growls and takes Bakugo's hand off his mouth, pinning both his hands beside his head as he fucks him. "When the hell did I say you were allowed to hold back?" Kirishima snaps and let's Bakugo lace his fingers through the alpha's. "Har-rder, please!" Bakugo moans and tosses his head back. Kirishima bites around Bakugo's neck and slams into him, getting a loud moan from Bakugo.

"Fuck! Right there, rig- ah!" Bakugo basically screams as Kirishima rams into him, rubbing just against the spot making Bakugo come undone. Bakugo arches his back and grips Kirishima's hands tightly. "You feel so good tensing around me!" Kirishima groans and pins Bakugo down as he slams into him. "Kiri, I'm g-gonna cum, I can't take it!" Bakugo moans and pants heavily. "Cum for me." Kirishima commands and Bakugo grips the redhead's hands so tightly his knuckles turn white, pushing his head back into the bed as he comes.

"Kiri!" Bakugo almost screams and his toes curl tightly. Kirishima groans at all the sensations; Bakugo pulsing around him through his orgasm, Bakugo screaming his name, Bakugo gripping his hands and legs twitching around him. Kirishima acts on pure instinct, shoving his knot into Bakugo and pushing more cum inside. "Fuck." Bakugo whimpers as cum leaks out and around Kirishima's knot. "Good boy, just stay there a moment until I can pull out without hurting you." Kirishima pants and kisses Bakugo's face. "Kiri..." Bakugo says softly, a sudden pang of emotion running through him.

"What's wrong, Kat? Too rough?" Kirishima asks worriedly and rubs his hand over Bakugo's tummy softly, feeling the slight bulge in concern. "No, no, it was great it's just, ah..." Bakugo rubs his neck awkwardly, shivering as he accidentally rubs his sensitive claiming area. Kirishima moves his mouth to where Bakugo's hand was, understanding Bakugo almost instantly. "Where do you want it?" Kirishima asks gently and Bakugo's eyes widen.

"You'd do that? Really? You understand that it's a lifelong thing, right?" Bakugo asks and Kirishima nods. "I've been thinking about it too, but I didn't want to freak you out. If you want it too, tell me where you want my mark." Kirishima insists and Bakugo guides Kirishima's mouth to a spot just above the crook of his neck, closer to the front.

"Here?" Kirishima asks, setting his teeth right at that spot, making Bakugo shiver. "Yes." Bakugo whispers and Kirishima gently bites, sinking his teeth into the sensitive flesh. Bakugo whimpers at the fuzzy feeling and grabs Kirishima's hair, tugging him closer. Kirishima leaves a deep bite mark before licking up the small amount of blood and kissing it better. Bakugo wraps his arms around Kirishima, keeping him on top and cuddled into him.

"Gotta pull out, baby." Kirishima mumbles and Bakugo whines. "You're gonna stay, right?" Bakugo asks, scared of going into his after-claiming heat without his mate. "I'm not going anywhere, babe. I'll be here to help when the heat comes, but I don't want either of us hurt sleeping like this." Kirishima says and softly pulls out. Bakugo pulls Kirishima against him and cuddles into his chest. "There, good boy." Kirishima says softly.