Toxicity

CHAPTER THREE

"Deku…"

Emerald meet furious ruby as his eyes were narrowed suspiciously, his face still contorted into an unwavering scowl. His voice was a loud whisper, it grating on Izuku's ears as he flinched slightly as the face in front of him got closer, "Where the fuck have you been? I thought you had wandered off and died from the attack several years ago… So where have you been nerd?"

Izuku eyes were wide with an underlining madness as a shiver ran down his spine, his brows knitted together, his voice uneasy as he fiddled with his fingers, "Uh… um… I've been out of the city, staying with family."

Izuku chewed on the inside of his cheek, hoping that Kacchan believed him. His intense stare drilled into him like a predator staring at its prey, waiting to attack. Izuku looked to the side as the taller male scoffed and walked away to class, Izuku following behind him as he sat in his seat, only for him to get straight back up. We were going to do training or battling or something along those lines, Aizawa didn't really state what.

A sigh broke through his rosy lips as he reached for the small black box that he had put in his bag before leaving that morning. He knew he would need these today. His ivory fingers gently fiddled with the box as he blinked owlishly at his 'hero' outfit, Shigaraki had to be responsible for this.

They stood in one of the various training simulator arenas as he adjusted the dark forest green hood on his head, the long green rabbit ears falling halfway down his back as large teeth covered his lower face like a mask. The teeth were abnormally large and pointed as it gave the overall outfit a villainous look, although the fact that it has rabbit's ears made it look twisted. Black fingerless gloves covered his arms and stopped just before his sleeveless hood, mid-bicep. Slim black slacks clung to his legs, a thin belt was fastened around his waist as it had many small satchels to hold things, in this case, the little black metal box. He wore his crimson sneakers on his feet and they were a bright contrast against the black slacks.

The glowing green wisps of his breathe curled over his mouthpiece as the teacher paired us up. Though due, to the class and teacher knowing very little about his quirk they paired him up with a pervert, Mineta. However, this training was battling and he had experience with this.

"Midoriya and Mineta, You're up!" Izuku let his hood cast a shadow over his upper face as he stepped into the small arena, emerald eyes glowing softly as he looked at the person in front of him with disgust. Such a vulgar and poor excuse for a hero. Mineta shook in fear, the green eyes the bared into him pierce his soul like a knife. Malicious intent curled off Izuku in a thin green shroud as he placed his gloved hand over his mouthpiece, standing in a fighting position.

He took a deep breath in, holding it in until it felt like his lungs would burst and then the match began. A thick green fog that grew in mass and density expelled from rosy lips as the mouthpiece was pulled down like a dam had broken. Mineta's eyes widened in horror as he ran away from the ominous emerald cloud that would simply knock him unconscious because the density having thinned over the distance that it had traveled.

Izuku scoffed softly at the coward, his fingers twitching towards the black box as he stopped himself from using it. He didn't want to kill him, but he could injure him. It'll be an accident.

A chuckle rose from his lips as he flicked open the black box, placing a thin cylinder between his lips as he grabbed a red lighter from the same box. The end of the stick burnt an angry red as his eyes flashed dangerously, breathing the chemicals as classmates gasped, "Sensei! We're not allowed to smoke at school, right?!"

"Eh… If it allows him to amp his power up I see no problem… I can always just interfere if it goes too far anyway…" Aizawa narrowed his tired eyes at Izuku, who ran at Mineta, dodging the purple sticky spheres that were being thrown rapidly. The cigarette hung loosely from his lips as he grabbed it from there and exhale a large cloud, the purple pervert perishing within the cloud as he collapsed to the ground, the cloud dispersing as the unconscious form breathed erratically.

Izuku flicked his hood off, dropping the cigarette as he scratched the back of his neck awkwardly, "Oops… I guess I gassed him too much… I'll take him to Recovery Girl, sensei."

Aizawa inclined his head as he grunted out, 'whatever' before Izuku grabbed the pervert with reluctance and began his trip to the medical wing. Though he had to be quick in order to watch the rest of the fights and take notes in his book, he still had a mission to do.

After quickly explaining what happened to the purple pervert, Midoriya returned to class, notebook in hand as he watched the remaining pairs spar. He closed his notebook as the bell rung, signifying the end of class as we headed to the change rooms. Izuku slowly made his way to the change rooms, feet softly clicking on the tiles as he heard the group of boys chat, apart from two figures. He slowly began to peel his gloves off, revealing the many scars that he gained from spars with Shigaraki, eyes running over them before folding the gloves and placing them on the bench. Pulling the hood off his thin form as numerous scars like the ones on his arms decorated his chest and back like messy drawings in the sand. Grabbing his school shirt he slipped it on as he felt someone's gaze on him, leaving his shirt unbuttoned, he turned to meet ruby orbs, "See something interesting, Kacchan?"

Kacchan's gaze narrowed as he took several steps closer to Izuku, looming over him as he looked over the revealing scars, faint concern appearing in his crimson pools, "Ya family abuse you or something? Cause that's a fuck load of scars to get in two years."

The door to the change rooms shut with a click as the Izuku and stared at the remaining male in the room, voice low and tired sounding. His innocent façade disappearing like a pile of dust in the wind, a smirk on his thin rosy lips as he looked up at the other, "Hmm, I actually got these scars from training and some of the fainter ones were from our old dead classmates."

Izuku ran a hand through his green curly locks as he looked up at Kacchan, the hand that was combing through his hair, reaching up to gently graze his fingers against his old bullies cheek. A faint fondness filled his emerald eyes as he grinned to the brink of it being maddening, thin wisps escaping his lips, "You've changed so much Kacchan, you'll be a great asset to the future events to come~"

Kacchan sneered as he stepped away from Izuku, scoffing as he turned on his heel and stormed out of the room, leaving Izuku to change in quiet. Izuku smiled smugly to himself as he had a vague idea of who would be good for candidates to convert to the League's side. However, it was too early into the mission to finalize these candidates and they may end up useless. He'd have to wait.

Waiting was the right way to play this game.

Fastening his buttons on his shirt, shrugging on his school coat and swapping his black slacks for the school grey ones. Collecting up his costume, he ran his tongue of his lips as he placed the items in his locker. A grin graced his rosy lips as he grabbed his bag and walked out of the change rooms, adjusting his school tie and chuckling. 'The enemy is always hidden beneath one's nose.'

The smirk on his face never faulting as he adjusted and placed his black mouthpiece on, slinging his school bag over his shoulder as he made his way back to the bar. His feet gently tapped on the ground, adjusting his backpack as he opened the dark oak door, it creaking out a faint squeal as he opened it fully. Ignoring the narrowed eyes on him as he walked up to the bar and sat down, breathing in the strong smell of alcohol in as it lingered in the air. Izuku's emerald eyes glowing softly as he looked at the purple mist, "Kurogiri, today was fun! I also have some very limited notes on a few of the classmates and I sent someone to the infirmary by 'accident'~"

Kurogiri's eyes narrowed slightly in amusement as a deep chuckle was heard from the purple haze, sitting the glass he was cleaning down on the bar, "Well, it's nice to know you're enjoyed your first day, but remember your mission and stay to it."

"I know 'Giri~ I just have to be good and get close before ripping there pretty lil' feelings to shreds~" Izuku giggled wickedly as he leaned further across the bar, "The only downside of this mission is the homework and the pros figuring me out... However, I haven't really made my day-bue to the world as a Villain... Speaking of, when will that be 'Giri?

Izuku tilted his head to the side as he blinked owlishly at the mist being, as a hand was placed in his green locks, ruffling the already untamable hair, "Soon... But you'll know when to make your appearance in our world, Midoriya."

The green-haired boy jumped at the sudden voice behind him, his emerald eyes meeting crazed red, Shigaraki. A pout was on firmly placed on the young boy's features as he huffed, a green cloud escaping out from the mouthpiece as he removed it. The material already eroding away and need of replacement. He pushed himself from the bar stool, grabbing his bag as he made his way to his room; one to retrieve a new mask and two to change out of this stiff uniform and get some practice done.

He dropped his bag onto the worn floor boards as they groaned in protests with every step he took into the room, fingers quickly unfastening his coat and buttoned shirt, tossing both onto his bed as he slipped on a tight fitting singlet. The article of clothing stuck to his thin form, showing the muscles that he had attained and the weight that he had lost over the years. Removing the grey slacks and switching them for a pair of dark forest green sweat pants and removing his shoes and socks and leaving his feet bare.

A shiver ran down his spine from the cold ground, green breath clouding in front of his face as he combed his fingers through his hair, making his way to the underground training room and the lab. He needed to test something out. That thing being that if it were possible to turn his gas into a liquid and use it as a consumable or injectable poison. Though in order to turn his gas into a liquid he'd need a sample, which is what he intends to do now.

The large metal door in front of him released a scream of protest as it was opened to reveal the divided room, the lab being on the left and the training area on the right. The room was divided by a brick wall with various targets on it. He rolled his shoulders as his bare feet carried him over to the lab area, his slender fingers running over bench as he picked up a test-tube and a cork. He poured a small amount of water into the bottom of the test-tube, where he then proceeded to breathe out a cloud of toxins into the tube, quickly putting the cork on as he swirled the gas and water in the tube.

The water gained a green colour as it dimly glowed from the toxins. He hummed in thought as he poured carborane acid into another tube, breathing out another cloud of green into the tube and closing it off. Swirling around the liquid as he placed them back down, observing the reactions for a moment before walking over to the train area.

He'd need to go out to collect some people to 'willingly' test the potency of the toxins alone. But that can simply be done tomorrow, so right now he'll train, do homework and rest. For this will be a long mission that'll test his patience and his affiances to be a threat to society.