Izuku has powers and transformation similar to Goku black, he's not reincarnation or trained by him just his ability to gain power every time he experiences pain, even minor injuries will give him noticeable boost in power and Yeah he's going to be...
Goto: How pitiful. Even though they already know that you guys are no match for me, they haven't send anyone to save you.
After goto says that he picks up a huge debris from the ground and was about to throw it towards the heroes but before he could, he suddenly hears a faint of music and slowly by slowly the music gets louder and louder until it was predictable where the sound came from.
Goto then turns towards the direction of the sound and saw a person standing on top of building behind them wearing black body armor and a head gear.
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Izuku: well...well... well... look what do we have here.
Goto: Who are you?
Izuku: Me? I don't think there any need to introduce myself to someone who's about to die.
Goto: About to die? *scoff* you're quite cocky for a nobody.
Izuku:... Nobody?
Upon hearing that izuku jumps down and upon landing, he looks at goto and
Izuku: Nobody, you say. Then why don't help me change that mister somebody. I will show you what this nobody can do.
Goto: Sure, I will make sure that you go down the history as someone who received the worst beating known to man kind.
After goto says that he rushes towards izuku and punched him in the face creating a small crater around izuku aswell as breaking the head gear izuku was wearing. After getting a direct hit on izuku's face goto smirks thinking that the match was already over but when goto got a good glance of izuku's face, he saw that his punch didn't had any effects on izuku, and for some reason izuku looked really angry.
Izuku:... Do you have any idea! how much money I spent on this headgear?!
After izuku says that he grabs goto's wrist and slowly removes goto's fist from his face. After removing goto's fist, izuku punches goto in the face sending him flying backwards crashing into one of the already destroyed building around them. After punching goto away izuku puts his hand in his pockets and takes out a mask to hide his face and after doing so, he slowly walks towards where Goto crashed.
And as izuku was making his way towards goto, he saw goto coming out of the building, he crashed into by himself but this time, he looked different. This time he had muscle...? wrapped around his hand
Izuku: what the hell kind of quirk is that?
After izuku says that he takes a defensive stance to check, if there was any noticeable difference in strength. As goto comes closer and went for punch izuku puts his hand in front of his face and blocks the punch, after blocking the punch izuku noticed a slight increase in his strength but not to an extent where he needed to use his full strength. This causes izuku to shake his head and
Izuku: what a disappointment.
After izuku says that he moves towards his right a little and once again punched goto in the face and then send him upwards. After izuku sends goto up in the sky, he flies towards the goto so fast that it looked like izuku teleported. After izuku gets close to goto, he grabs goto by his skin causing goto to scream in pain. Izuku then throws goto up a little and kicks him in the chest sending got back to the ground.
After a while izuku made his way towards the ground and saw that the other heroes had already arrived and right now we're helping water hosu hero. Izuku then looks around to see where goto was and saw him laying inside a crater not far away from where izuku was standing. When other heroes saw izuku, they all took their fighting stance but before they could do anything, all of them felt a large amount of killing intent, which didn't came from izuku.
Upon feeling the killing intent izuku looks towards the direction, where the killing intent was coming from and saw Goto slowly standing up and once again he looked different, this time instead of his muscles wrapped not only around his arms, they were wrapped around his whole entire body, which made him look a lot bigger than he previously was.
Izuku: So are you finally using your full power?
Goto:... yeah... I underestimated you a little, I'm sorry about that. It won't happen again because now I'm going all out.
After goto says that he rushes towards izuku and upon witnessing goto speed, izuku's eyes went a little wide and a smirk appeared on his face, as goto comes close to izuku, he went for a punch which izuku blocked but was send flying backwards crashing into a pillar and then into a wall.
After a few seconds izuku comes out of the wall and slowly starts stretching his hands to check whether any bones were broken and there were none. After that izuku looks at goto and who again rushes towards izuku and as he gets and went for a punch, izuku grabs his hand and said
Izuku: You're good... But not good enough!
After izuku says that he punches goto in the face and since izuku was holding goto's fist, he didn't flew backward, after that izuku brings goto back to him and punched him in the stomach causing goto to spits out saliva. Izuku then again punches goto in the face and then again and then again, not giving goto a chance to fight back. After punching goto a few times, Izuku pushed goto back a little and then kicks him away. After kicking goto away izuku rushes forward and before goto could hit the wall, he comes next to him grabs his head in mid-air and slammed it on the ground.
After slamming goto's head, izuku stops and takes a good look at goto and saw that he wasn't moving. Izuku then once again punches goto to make sure that he was actually unconscious and after doing so, he looks around and saw all the heroes present there were looking at him. Upon seeing those stares Izuku was about to say something but decided to ignore it and flies away.
