User:Megistos86/Sandbox/U.A. Team vs. Tomura Shigaraki

U.A. Team vs. Tomura Shigaraki is battle between a team made up of Heroes and U.A. students against "Tomura Shigaraki".

Prologue
In order to defeat "Tomura Shigaraki", the heroes are not only aware that they must separate him from All For One so they can not assist each other in battle, but they also have to face him in a terrain where he cannot take advantage of his multiple Quirk s. For this, the U.A. High School is transformed into a floating fortress with all sorts of measures designed to counter Tomura's powers

This version of the U.A. has disposable parts to prevent the decay from spreading, with various students and heroes taking charge of repairing and replacing the damaged parts. To prevent "Tomura" from escaping, the battlefield is surrounded by an electromagnetic barrier whose energy would be provided by several students capable to generate electricity. In the hero force in charge of fighting "Tomura", Deku will play a key role in the strategy to defeat him. Lastly, Phantom Thief copies and learns to use Kurogiri's Warp Gate Quirk.

When everything is properly prepared, the heroes lure All For One and his allies into an ambush using Yuga and Deku as baits, and with the help of containers, the heroes divide the villains into smaller groups and push them into portals created by Phantom Thief, sending them to the assigned areas.

As planned, Tomura alone is sent to the U.A., but the first failure of the plan occurs when Deku was dragged into a different portal by Himiko Toga, ending up in Okuto Island, two hundred kilometers away. Dynamight, who was with him, warns Best Jeanist that something went wrong and Deku isn’t there.

Battle
When informed of what happened, Best Jeanist asks what happened, but Dynamight only says that Deku was taken away somewhere else. Suneater worries about this setback and Nejire Chan suggests warn everyone. Only Mirko doesn't seem to care about the situation and the only thing they should focus right now is facing "Tomura".

As the heroes rethink their strategy, Tomura figures that he is in a floating version of the U.A., in addition none of the escaped convicts or members of the Paranormal Liberation Front are there, so he has to deal the heroes alone. Without giving too much importance to his situation, as soon as he lands, Tomura touches the ground and begins to destroy everything with his Decay.

However, the disposable part placed underground launches up skyward to harmlessly disintegrate to nothing, preventing the Decay from spreading. This also launches Tomura into the electromagnetic barrier, severely electrocuting him. Shigaraki tries to recover from the shock but before he can do it, Best Jeanist uses his Fiber Master Quirk to ensnare him with wires and slam him to the ground.

It doesn't take long for "Tomura" to break free, and as he avoids being captured again, he understands the strategy the heroes are trying to employ, taunting Best Jeanist that sooner or later they’re going to run out of terrain. The hero simply replies they are never short of resources, showing him how new parts fix the area affected by Tomura's Quirk. Jeanist tells "Tomura" that the arena was constructed with the purpose of cornering and neutralizing him.

Inside the huge floating building, numerous professors and students from the U.A. are working tirelessly to constantly repair pieces destroyed in battle: Power Loader reports about the destroyed metal plates, while Cements manages the Development Class to provide new pieces to fill the gaps. Creati uses her Quirk to produce a near-limitless amount of material to supply them with, being aided by Lunch Rush, who constantly prepares meals for her so she can using her Quirk endlessly.

Back on the surface, Best Jeanist continues his speech saying to "Tomura" that no one is fighting for honor or glory, but to stop the doom he brings. All the heroes go after him, so "Tomura" decides to shoot a shockwave to destroy the forcefield and the electricity generator on the other side, only to find out that he can't use any of his Quirks.

Turns out, standing atop the power room, Phantom Thief is using Erasure on him, with Eraser head and Manual next to him: The former is in continuous contact with the Class B student to circumvent his time limit for copied abilities, while the latter uses his Quirk to wet Phantom thief's eyes so he can keep them open and on "Tomura". Despite only having one eye left, Eraser Head also contributes as best he can by using his Quirk, but he laments the unavailability of Deku has caused a halt in their plans.

With all his Quirks blocked, Tomura is at the mercy of the heroes, who pounce on him, but then something totally unexpected happens. "Tomura"’s left hand suddenly begins to transform into a grotesque amalgamation of fingers. This catches the heroes completely off guard, as he has never displayed such an ability previously, and before they can react, "Tomura" attacks Mirko with it, since she was the closest.

However, the attack does not end there but the grotesque swarm of fingers continues to grow larger and larger, overruning U.A. and causing great damage in its path, destroying one of Katsuki's Grenadier Bracers. Heroes ask Phantom Thief if Erasure is working to which he assures is still in effect, which means Tomura's new power does not come from any Quirk, much to their confusion.

"Tomura" confirms that his ability it’s a natural growth of his body, similar to the growth of nails or hair, as his body is adapting and mutating to accommodate the power inside him, an outcome predicted in Dr. Garaki’s Quirk-Singularity theory.

By losing her prosthetic right leg and left arm, Mirko managed to avoid Tomura's unforeseen attack, and immediately calls in for spares that arrive from below the battlefield. Once she's back in action, she orders Dynamight not to act too recklessly, something he doesn't take too well, starting an argument between the two that ends when Best Jeanist tells them to stay focused.

A worried Phantom Thief swears that he hasn't made any mistakes using the Erasure, with Eraser Head assures him that he hasn't done anything wrong. Mandalay appears to report they’ve gotten into contact with Deku. He apologizes to his teacher for being dragged off by Toga on Okuto Island and requests being warped to U.A., before being interrupted by the fighting.

Unfortunately, the heroes are aware that this will not be possible. Phantom Thief can’t use two quirks simultaneously, and each of innumerable growing spreading fingers that sprout from Tomura's arm has the potential to use Decay. This means that if Phantom Thief shuts using Erasure to bring Deku there, Tomura will take that opportunity to destroy the entire battlefield in one go. Considering the situation, Eraser Head tells Deku to get to U.A. on his own. Until then, the heroes declare that they will strive for victory against "Tomura", even without One For All.

Despite their boast, it is clear that the heroes have trouble dealing with the gigantic and misshapen mass of hands and fingers, not being able to do anything but dodge when it comes at them. Suneater is almost crushed by one of the tentacles, while Nejire Chan tries to hold another one back with her Wave Motion Quirk, having to move away when another tentacle attacked her from above.

The other heroes also dodge the waves of flesh, with Best Jeanist using his Quirk to move Katsuki away, who got a spare Grenadier Bracer to replace the one that was destroyed. Best Jeanist reminds everyone to keep moving to avoid being swallowed by the masses of flesh, while searching for Tomura's main body. On the bright side, he also warns them that although the hands are a massive threat, while they are active "Tomura" can’t uses his All Might-esque mobility.

Edgeshot uses his Ultimate Move Pulp-Thread Throttle to take a huge chunk of fingers and hands with the attack, only for more to grow in its place. Seeing this, he doubts such power is a simple “growth” and not be produced by a Quirk.

"Tomura" simply responds that it's the result of his body adapting to be able to stably contain the All For One and all the other Quirks inside him. He continues his speech declaring that with his power he will create a new world where he will end inequalities and the rejection caused by lack of understanding, having every subjected under his rule, mockingly asking the heroes if world peace isn’t what they yearn for.

Dynamight responds that, even though he doesn't know if he's currently Tomura or All For One, he's sick of his speeches, and activates "Suppressive Heavy Mobile Unit: Strafe Panzer". Several guns come out of his his new support item and he starts shooting wildly, blasting large chunks of deformed flesh in his way towards "Tomura".

Thinking about all the heroes and his classmates who are giving their all, and recalling the time Izuku saved him and Tomura's words about lack of understanding results in fear and rejection, Dynamight yells the villain he already saw the real steps to overcome such issues. Seeing his trainee tearing straight through Tomura's fleshy defences delights Best Jeanist into using his full hero name. Dynamight manages to get close enough to "Tomura" to attack him with his new Ultimate Move, Howitzer Impact: Cluster.