Chapter Text
In the back of a tall armored truck, y/n was waiting for her team to get back from their remote mission. She loved working with Kirishima as the two were often put on the same missions through Fat Gum’s agency, but this was her first time working with the top two heroes in the industry. From the shouting she heard in the back while driving them out to location, she had guessed it was pretty rare for Deku and Ground Zero to be partnered on the same mission as well. At one point she had to pull over and let Deku ride in the cab with her just to get away from the angry blonde while Kiri calmed him down. Deku was kind and friendly, asking her how long she had been a medic and how she liked working at Fat Gum’s agency. Their conversation was short lived though because 10 minutes later they had arrived and all three heroes sprung into the mission in full force, leaving her to wait in the back of the truck and hope no one got too damaged. Just before they left she had called out “be careful!” Kirishima had grinned back at her, saying “no promises” while giving her a knowing wink.
The back doors rip open, starling her while Deku charges in carrying Kiri who’s arm is hanging limp and bloody by his side. He drops Kiri on the bench and quickly goes to close them in while explaining what happened. She didn’t catch the details but apparently they were now in a hurry, mission accomplished but barely. Bakugou had taken charge and directed Deku drag Kiri to the medic while he hopped in the driver’s seat and sped them to safety, ignoring his own wound currently soaking the side of his torso in blood.
“What did I JUST say before y’all left?!” Y/n shouted at Kiri who had a smirk on his pain-scrunched face. “Guess I couldn’t help myself” he said while trying to shrug but only one shoulder moved. Y/n sighed, “you big dummy. Alright then, on your knees.”
Deku had been busy muttering to himself about the mission report and checking their gear, but his ears perked up at that last command. Huh? On your knees. Wouldn’t she need him to lay down for treatment? He looked up just in time to see a battered, grinning Kirishima sinking to his knees in front of y/n, his towering height now eye level with her breasts. Izuku heard him let out a small groan and a “yes mommy” in response to her command as she stepped forward. She pulled her wrap shirt to one side and out popped her plump breast, hardened nipple immediately sucked into Kirishima’s mouth as he began to drink from her. She gasps at the warm, wet feeling of his mouth as he moans between swallows.
“Wh...what is hap..??” Poor Izuku’s confusion brings y/n’s attention to him and she smiles sheepishly. “It’s my quirk. I can produce breast milk that has healing properties.” Kiri says something then but it’s muffled around his mouth full of boob. “Yeah, or as Kiri says, I have magic titties” y/n giggles and smirks back at Deku.
“Wait...I didn’t even know you had a quirk! When Kiri said you were a medic I just thought he meant you trained with recovery girl!” Izuku looked frazzled, like he wanted to ask more but didn’t know where to begin. He also began to notice that kiri’s arm and shoulder were healing incredibly fast, even bringing his hand up to hold y/n around her waist as he gave a few final sucks before releasing her nipple with an audible pop. He slouched back on the bench with a satisfied grin, newly healed arm resting behind his head as he gazed at y/n with hooded eyes. “Mmm thank you mommy.” She’d be lying if she said it didn’t stir something in her to hear those words, but she simply tucked her breast back in her shirt and they both turned to Izuku to discuss switching Bakugou back for healing next.
But before she could ask who should drive, Midoriya, who had felt nothing but confusion, curiosity and excitement at her new unheard of powers, locked eyes with y/n and let out a throaty “show me”. Then, without breaking eye contact, he snapped two of his fingers like twigs.
Y/n gasped while Kirishima let out a roar of laughter, barely able to contain his fits while choking on his words. “Shit Midoriya, I knew you loved your quirk research but I never pegged you for a kinky bitch!” Then doubled over again, wiping tears from his eyes.
Y/n rolled her eyes. “Really Izuku?? Your partner is bleeding out in the front seat and you seriously just said ‘he can wait’ about it? If you wanted to find out more about my quirk, you could have saved the theatrics for when we got back to the hideout!”
Midoriya looked almost as shocked at himself as he did hungrily at her. “I..I just have to know how your healing works, I’ve never seen anything like it before!”
Y/n rolled her eyes again. “Fine. But if the angry blonde passes out and wrecks the truck, that’s on you.” She steps in between izuku’s legs and moves to pull her shirt to the side. “You’ll have to drink from this side since the other one needs more time to make up from what Kiri drank.” Izukus eyes went wide and he looked like he was about to ask follow up questions but they got caught in his throat as he was met with her ample breast in his face.
He swallowed hard then leaned forward and took her nipple into his mouth, savoring her taste as thick, milky fluid began leaking onto his tongue. He gently started sucking and immediately let out a low moan as more milk filled his mouth. She tasted like ecstasy. He gazed up at her as he swallowed, lustful eyes meeting hers. Something awoke in Izuku and he realized that Kiri may have been right. This right here was some deliciously kinky shit, and he was an absolute kinky bitch for it.
He was so enveloped in his new found desire that he almost forgot about his broken fingers. He looked down and realized that they were completely healed! In his astonishment, his mouth slipped from y/n’s nipple and she let out an “oh!” at the sudden absence of wet warmth. Deku looked up at her again as a lazy, dreamlike smile spread across his lips before he ducked his head down to capture her perfect breast in his mouth again.
Y/n gasped. “Izuku! Wha-“ but before she could finish her complaint, a loud banging rang out from the cab and the window separating the back of the truck slid open with a clang. “ARE YOU IDIOTS DONE GETTING BANDAIDS YET?! I’M GONNA PASS OUT IF SOMEONE DOESN’T SEW ME UP RIGHT THE FUCK NOW!!” Bakugou yelled through the window without looking into the back, pulling off and stopping the truck with an angry screech.
“Shit!” Kiri swore as they all snapped back into action, y/n hurriedly covering up while Deku tried his best to hide his huge (and still growing) hard on before Bakugou threw open the doors to the back. The heroes scrambled out of the truck as Kiri threw out an “I’ll drive!” and suddenly y/n was now alone in the back with a very angry, very mortally wounded Bakugou Katsuki.