Mastermind: Strategist For Hire

Overhaul

It had been a month since Inko's "mugging", as the police had called it, and Izuku was finally ready. The day after his mom was attacked, Izuku had pretended to go back to Overhaul with his tail between his legs, but he was really playing the long game, making sure his mother was safe until he was ready to destroy the yakuza himself.

Being part of the yakuza was...interesting, for lack of a better word. For all that Overhaul bragged about "using him to his fullest potential" Izuku had basically been doing glorified busy work every time he was at the compound. He was seen as a 'new member' and so was at the bottom of the pecking order, a fact that irritated him to no end. He wasn't even allowed to be involved in real work of the yakuza. All he knew was Overhaul's glorified rhetoric about a quirkless world. It was getting really annoying.

Shouto had offered to come along and help him get his revenge, but Izuku had respectfully declined. Overhaul had threatened his mother , the only person who had even given a damn about him before he became a villain, so leaving the job to anyone else would have been supremely unsatisfying, even if that someone was close friend like Shouto.

Izuku pulled his mask up over his mouth and jumped down onto street level, staying in the shadows as he sneaked up on the guards. A few slit throats and a stolen keycard later, he was wandering the silent halls of the upper compound. He knew there were only a few guards on this level, with most of the Yakuza living and working in the labyrinth below, so it didn't take Izuku long to track down the dozen or so low ranking members on duty that night and take them out. A simple throwing knife through the eye or a slit throat was a quick enough death for most of them. Izuku wasn't about to waste time and energy playing when any of them could easily raise the alarm. Besides, these small fry were nothing more than collateral damage in his complete annihilation of Overhaul and an effective message to anyone else who might get it into their heads that it was a good idea to go after his mother. Izuku had bigger plans for the night.

It took him a few minutes to find the secret entrance to the rest of the compound since he'd never been allowed to find it unaccompanied, but it only slowed him down a little. He kept to the blindspots in the halls, silently killing everyonel he came across until he found the barracks. He almost felt bad as he viciously slashed each one of the sleeping men's throats, but the feeling didn't last long. Yeah, none of them had made the call to attack his mother, but they had all made it known in the past month month exactly how they felt about weak, quirkless people like him. And they were following an idiotic psychopath, so there was that.

Izuku followed his same pattern as he gradually cleared the compound, picking the lock on every door and killing everyone inside. He hadn't been surprised to find a variety of labs tucked away, but was surprised at how little raw material they had stored. Shouldn't there be a lot more chemicals involved in the production of quirk erasing drugs?

He pocketed a few vials of the quirk eraser that he found in the lab and used them to coat some of his knives before heading toward Overhaul's room. The only other room left aside from his was a door that locked from the outside. Izuku didn't know what was in that room, but whatever it was would still be there after he had killed Overhaul and his inner circle.

The expendables all stood up when he entered the small guard room he had to go through to get to Overhaul and he smiled at their shocked expressions as they took in his blood soaked costume.

"Mastermind," Chronostasis said, carefully keeping his voice even, "you're not supposed to be here."

"You're right," Izuku smiled, "I'm not."

In a flash, Izuku had thrown two of the knives he'd dipped in quirk eraser at Setsuno and Sakaki, since their troublesome quirks could affect him directly. He smirked when Setsuno's eyes widened as he tried to steal the knife Izuku had just grabbed, only to be left grasping air.