Walking into the Unforeseen Simulation Joint (USJ), the students of 1-A were more than happy to be away from what they thought was a monster, and into a simulation training. The show Izuku put on on the road, along with the fact that the truck also stopped by the USJ, let the students know that things were going to be anything but simple.
The USJ itself was a large establishment, that contained many areas, each designated to simulate different types of conditions that hero's would be called to to rescue people. The first area was on fire, being barren otherwise. The second was covered in ruined buildings and the ground seemingly moved like an earthquake. In the third, it poured endlessly, and would've flooded itself if drains weren't installed properly. The fourth involved water like the third, but unlike the third, it was a boat in the middle of an artificial lake. The fifth was like the earthquake zone, but was instead simulated to be like a landslide. Finally the last was something like a mountain region, and a bridge could be found over a deep artificial gorge.
Pro hero Thirteen, who brought the students in, began their explanation soon as the hero students were engrossed in the surroundings. Izuku took the chance of them all being distracted to fly into the dome, and hover above everyone in the center, sticking to the ceiling. He couldn't be seen that easily considering how big everything was, but just in case, he only had his permanent body parts activated, which amounted to his wings, ears, small fangs where his canines are, and some bits of carapace on his back and chest.
His eyes focused on Thirteen, as they recited the speech they had prepared beforehand. They went on and on, talking about how quirks were things that could be used to save, but also just as easily hurt. Izuku thought about their speech as they said it, getting reminders about his last rampages, and how it applied to him more than most.
Before he could get into another downward mental spiral, a noise brought him back to reality.
SCREEEEEEEEEEEEEEEEEEEEEEEEEEEEE-
The noise sounded out from right outside the USJ, but before Izuku could figure out what's going on, a portal opened up in the center of the middle area, and Izuku's eyes traced every movement it made. The smoky portal proceeded to spew out dozens of villains who all spread out, ready to go anywhere. He saw a few sneaking into each zone, and he began to worry.
However, his eyes traced the portal villains form, who finished spewing out small-time villains, before spewing out 2 more behind the whole group, and finally grouping itself together around a metal-looking collar that they had on. Izuku was sure to make note of this.
The villains began their speech as every single one did, and quickly, Izuku began to transform. He was given time, and he made use of it. his muscles bulged as his body quickly began to take on all the positive things he could get out of his makeup. the clawed, scaly hands came back, being able to shift between a giant pincer, and a regular hand shape. His arms both grew thicker and slightly longer as carapace coated every inch, leaving some thinner bits by the joints so Izuku could have full range of motion. His senses as well were enhanced beyond human as his eyes were covered with secondary eyelids. The eyes themselves also split into nearly a thousand lenses, each looking around, so he had a very high range of view, while still being able to see every detail.
He was ready to fight, and seemingly, the villains were going to give him one.
The mist villain made the move first, teleporting to the students, ready to send them, in the villains words, to their doom. Izuku however, was faster, and with the quickest burst of speed his wings could comfortably manage, he flew behind the villain, grabbing it by its metal collar in a streak of green.
"Just try me"
Yanking the villain away from the students, he watched them scurry out of the building, and while doing so, he threw the misty villain at another who stood in the back. This villain had grey, almost silver hair, but his body seemed slightly malnourished, and extremely pale. He kept scratching at his neck, seemingly trying to rid an itch that didn't exist.
"Argh. Of course some stupid secret boss shows up. Nomu, get him."
The now named nomu beside him was a beast to say the least. The hulking beast had a deep blue skin, and an oddly shaped head. The head itself looked mangled and each feature had been stretched or changed, so much so that Izuku almost doubted if the nomu was human. However, it was clearly wasn't something that looked normal. The nomu had claws, both sharp and long, and they came from the beasts fingers, ready to tear apart anything. The beast was also covered in something like a carapace, but after a few attacks, Izuku could tell it was closer to keratin. The arms and legs seemed modified as well. The punches easily broke speeds that shouldn't be possible, and the legs were stronger, letting the discount hulk jump around easily. When it seemed like it was finally the end of the long list, a tongue shoots out of the nomu, nearly grazing Izuku.
'So they mixed an Armadillo, a Star-nosed Mole, a Peacock Mantis Shrimp, and a Blue Poison Dart Frog? Are they trying to kill people?'
As Izuku readied himself to fight, having gotten the nomu's make-up after a few attacks, he was ready to blast the nomu out of the water. Readying a runners stance, he jumped forward, using his full bodyweight and armor to act as a bullet, and ram straight into the nomu at max speed. This however, didn't phase the nomu, who then locked their hands, and swung downward to crush Izuku.
Dodging by flying to the left, he grabbed a few villains who had backed away, and threw them at the nomu, expecting a dodge, or something along those lines. He changed his hands to pincers as well, since extreme forces like his opener didn't work.
"Ha! You can't beat my nomu! He's an anti-All Might!"
That name ticked Izuku off, as he growled a bit, before launching himself at the nomu once again. Out of the corner of his eye, he saw Eraserhead, Midnight, and Thirteen line up at the door, seemingly ready to evacuate at a moments notice.
"He's got shock absorption, and hyper-regeneration! He's the ultimate sandbag!"
Launching him at the beast again, Izuku flies past, hooking on with his scorpion tail, and quickly injects as much venom as he can. At the same time, he bit into the creatures neck, being sure not to swallow, and used his snake fangs to inject even more venom into the body of the nomu.
Soon though, he figured that it wasn't doing anything. Either cause the nomu had lost all free thought and was just a puppet, so neurotoxins won't work, or cause it had an immunity of some kind. As such, he hand one option. To beat it down into submission.
This option was elating, and the insane laugh he let out sent a clear message. The villains quickly began retreating as the battle ensued. Izuku had the upper hand in movement and ability usage, but the nomu was so strong and defensive that he could barely break it down bit by bit.
Its regeneration was also troublesome, since any afflicted damage would immediately heal, leaving him just more and more annoyed as the battle went on. Went on, it did as the war of attrition was so demanding on focus. If he chopped off one piece by gouging it out, it'd just regenerate. If he was still for too long, it'd try to either catch him with its tongue, or its fist.
Endlessly the battle went on, and Izuku was so focused, he didn't notice a piece of the meat going missing. In his thousands of eyes, the nomu was his only target, and he had to break it down.
As time went on, he began to use his bursts of speed more, pounding his pincers into the nomu again, and again, and again. He crushed one arm, and it regenerated. He rammed himself into it, and it didn't budge. He eventually tore off its head, but it just regrew from the head.
Izuku battled the nomu for what seemed like hours, going at sub-sonic speeds, and constantly dodging punches that might as well have been gunshots.
Soon enough though, Izuku finally managed to rip the things head off for a third time, and he grabbed it with both hands, before ripping the damn things skull in half, and crushed its brain. It wouldn't regenerate from that. It couldn't.
As Izuku calmed down, he began to retract his transformations, so he could rest a bit. However, a hand grabbed his face from behind, and Izuku's fearful eyes met the cruel eyes of someone who just began to shimmer into existence.
"Say goodbye to your humanity~"
The villain spoke in a sing-song voice, as Izuku felt a piece of meat get stuffed in his mouth, and in shock, he swallowed.
Gulp
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Quirk Deku One-shots
FanficI had many ideas in the quirk ideas for whole stories, but I'm too lazy to make full books about each, so one-shot it is! Also, Izuku's actions may not be the same as the show, nor may any other characters. Why? Because I like it that way. You could...