Kiribaku Oneshots

Genderswap Kiri - Krbk (5380 words)(NSFW)

The class was relieved that they didn't have a test today. Aizawa instead postponed it to next Thursday while he had the class train today. They were paired in groups of four, having two teams face off each other. Like usual, Bakugou and Kirishima were paired, and they were fighting against Jirou and Tokoyami. 

"Idiot, move!" Bakugou yelled, springing forward with a blast. Kirishima jumped to the side, nearly dodging the blast. He quickly hardened his right side as one of Jirou's jacks slammed into it. "Dammit!" She cursed as his hard skin cut her quirk. Tokoyami himself dodged the blast fired at him, Dark shadow springing out just as the light from the blast faded. 

"Hah! Take this!" Bakugou shouted, smirking widely as his hands let off a small flash grenade. Kirishima ran forward as the two were blinded, but he didn't notice Jirou shoving her fists onto the ground. "Kirishima!" Bakugou screamed out as Jirou's heartbeat suddenly bursted from the dirt below him. Kirishima hardened quickly, the force of the sound shooting him off to the side. 

Sadly- their class wasn't the only one who was outside training. The Support classes were out testing out inventions, and Kirishima just happened to barrel into one of the students. The girl shrieked, impulsively using her quirk on the redhead as smoke billowed out quickly around them. Class 1-A and the Support classes paused, the girl's classmates looking on with wide eyes due to her quirk. 

"Kirishima! Are you alright!" Kaminari called out, rushing over with a few other students. When the smoke cleared slightly, only a few were able to see the two. "What the-" Kaminari cried out, covering his eyes quickly as he turned away. Bakugou also quickly looked away, and both Jirou and Ashido rushed forward. 

Ashido placed her hands on Kirishima's face, inspecting it. Jirou fell to her knees next to them. "I- I'm sorry!" The Support girl sobbed, fat tears falling down her face as she held up her hands in defense. "What happened?" A deep voice spoke, and the four looked up to Aizawa. Kirishima blinked, not knowing why Ashido was staring at him intently. "The hell?" Kirishima asked, moving back slightly before realizing how heavy his chest suddenly felt. Why was his voice higher?

"M-My quirk is to switch the gender of someone else!" She blurted out, turning to make sure Kirishima was alright. Kirishima felt his face heat up as he quickly crossed his arms. He squeaked as he felt the mounds attached to his chest, squeezing them tighter against himself. "can't you turn him back?" Aizawa sighed, blinking slowly as he shoved his hands into his pockets. She shook her head, "I can't reverse it- He'll be stuck like that for a few days, I'm so sorry!... Though, he doesn't have a womb, so it's okay in the uh... monthly cycle regard.. i-! I'm sorry!"" 

Kirishima gave a breathy laugh, immediately grimacing at how high it sounded. "You're fine, really!" He tried to reassure, lifting his knees up to help protect his chest more. "Idiot, here," Bakugou walked forward as Tsuyu tossed him his bag that Sero got out from the locker room. Bakugou pulled out a black hoodie, chucking it at the newfound female. Kirishima nodded, quickly shoving off the gears on his shoulders and putting on the article of clothing and breathing in the scent of his boyfriend. 

"Alright, that's enough for today.." Aizawa huffed, "Class is dismissed! Have your homework done by tomorrow, I'm collecting it first thing." The class cheered, everyone heading into the locker rooms. As there wasn't a reason to put his school uniform back on, Kirishima pulled out a pair of black leggings before heading to the corner of the locker rooms to be out of everyone's sight. 

Kirishima quickly took his costume off, finding it easier to step out of his baggy pants. He sighed, shuffling on his feet to get used to not having his usual genitalia. He lifted his arms up to poke at his now-longer spikes, half of them drooping downwards. He sighed, realizing it would look better if he wet it down and brushed out the strands. He cleared his throat before talking with his slightly-higher voice, "Hey, does anyone have a brush I can u-Eek!" Kirishima screeched as he felt a hand slide through the folds of his new body part.