UA's Gremlins

We got in...

The next week went by in a flash. Katsuki and Izuku continued training, even going out on a few missions. Rumors of the demon villains spread - one with hands of fire and one who communicated only in whistles. Their master was very satisfied with his little band of chaos, watching from afar as Shigaraki grew in leadership and his two pet projects become self-confident pests

Then the fateful letters arrived at their "home." Izuku's "dad" dropped them off. Their odd little family gathered round as Katsuki went first. He sneered as a hologram of All Might appeared, congratulating him on getting first place on the entry test.

"Ass might," Katsuki grumbled as Izuku squealed in joy.

"Way to go, Kacchan!" Izuku chirped happily as the blond just smirked.

"What can I say," the blond smirked, "it was fun getting to blow shit up without worrying."

"Now Zuku!" Toga cheered.

Izuku opened his, not too eager. He was delighted when All Might appeared again and welcomed him to UA with an amazing amount of rescue points. It even included a video of the girl he'd reacues trying to give away her points to help him.

"Who the hell is that?" Shigaraki grunted.

"Someone I can use," Izuku smiled. "She isn't very observation or strong... but I won her and that pink haired girl over with my charm."

"Charm? Seriously?" Dabi laughed.

"Our gremlin used those doe eyes for our selfish ways," Katsuki smirked. "Bout made that four eyed bug shit his pants too."

Toga giggled. "Oh, tell me tell me tell me!"

Izuku grinned. "Kacchan was napping after that joke of a test, and he started to actually scold us cause he was snuggled against me."

"Asshole," Dabi muttered as he slung an arm over Shigaraki's shoulders.

"I just gave him the look and asked if we offended him," Izuku smirked. "The look on his face when everyone stared at him...plus he ran away from the big scary robots at the end."

Shigaraki snorted. "And he wants to be a hero? Pathetic."

"Agreed," Kurogiri said. "I am certain that our young gentleman didn't run away?"

Izuku puffed up with pride. "Of course not. I used that girl to earn all the rescue points. Went right for that excuse of a weapon."

"Saved pink cheeks and all without using a flashy quirk," Katsuki boasted. "Shitty hair could learn a thing or two."

"Shitty hair?" Dabi questioned.

"Yeah," Katsuki shrugged. "This dork who could turn himself to rock or something. All brawn, no brains with this dumbass hairdo, too."

"So you got a target too, hmm?" Izuku giggled.

"Well, if we're gonna blend in, we should probably play nice with our toys," Katsuki snickered.

"Very well done, my boys."

All eyes turned to the old TV in the corner of the bar. All for One sat on his chair, proud smile on what they could see of his face. The pair perked up with pride and manic hope for more opportunities.

"I agree with Katsuki's assessment that you will need friends to blend in," he continued. "And you both did well playing at hero, but now is when the mission gets real."

Izuku squirmed in his seat, fingers twisting in the sleeve of his blush pink sweater. Beside him, Katsuki was bouncing his leg, combat boots smacking the floor. All for one noticed and tried not to smirk.

"What do we need to do, old man?" Katsuki grunted.

"You're in the hero course," All for One explained. "Which means you will be surrounded by Pro Heroes constantly. You will have more eyes on you than ever before."

"So?" Katsuki grunted.

Izuku giggled. "Kacchan, he's saying we need to be more aware of what we do. We can't let them see the real us."

Katsuki frowned. "But when am I not me?"

"You're always a brat," Shigaraki agreed.

"You have to continue to curb your anger and your protective instinct over Izuku," All for One clarified.

Dabi frowned. "So that means our green gremlin has to stay sickly sweet?"

"I can do it," Izuku assured. He jumped to his feet, standing tall. "I've had those idiots at school eating out of my hand for almost a year."

"He really has," Toga giggled. "And he got you that wonderful material for your nomus!"

All for One nodded. "He did, but I believe the demons need to disappear for a while. It would ruin our plan for a hero to spot you now."

The two frowned with Izuku sitting back down and pouting. He liked their little missions - they were fun.

"Don't be like that, my boy," All for One laughed. "I assure you that you will get your chances. After all, hero students do combat training. You will have a whole class of toys to play with."

Izuku considered it, then pouted harder. "Nu-uh."

"What the hell ya mean nu-uh?" Katsuki demanded

"Kacchan," their little gremlin whined. "The world sees me as this shy, sunshine kid! How can I play with the toys when I can't be me?"

Katsuki smirked. "You use it to your advantage. Work them like puppets to do what you need or want. And then throw a mean fist during training. I've seen those tears you can pull. "

"Yeah!" Toga agreed with a giggle. "Don't forget you got Dabi to apologize after you kicked his ass in a fight."

Izuku considered it. "Do you really think we can do this?"

Kurogiri nodded. "Indeed, my boys," he said. "You are the demon villains.  Whispers in the world who are never seen but feared.  I know you boys can do whatever you desire."

Their little family nodded in agreement.  The duo finally relaxed, and Izuku stopped pouting.  Immediately, the siblings began plotting how to play up the false facade Izuku had created and how to explain away his skills. 

All for One observed for awhile before signing out.   He now had moles at all levels of the school and would finally take out the Hero Society once and for all.