Izuku Ultratrix

New found power

Its basicly the Sluge villan thing and everything went as cannon except katsumi being bad against Izuku.

We now timeskip to the end of the school as Izuku and Katsumi decide to have a race to their house as they split ways. 

Now we see our favorite green-haired boy running until he here's a voice calling him that send shiver down his spine as he heard "a body ha I mean it isn't a girl but I will take anything now." as the sluge villain jumped at izuku he felt a fast wind pressure that made the sludge villain explode.

Then a voice that inspired confidence and peace spoke "It is fine now. Why? Because I am here!"

As Izuku turn around the was shocked to see the symbol of peace All girl

Izuku stared in astonishment. A couple of accommodating second later Izuku asked for her to give him her autograph which sees companies and says that she has to go and Allgirl jumps away with a bottle filled with the sluge villain however Izuku grabs a hold in her leg and everything goes like in cannon, until they hear explosions 

However in another place in the multiverse, we can see an intelligent being finishing his creation the ultratrix as he finishes the door behind him explodes and you can see an octopus type creature say "Azmuth surrender the ultratrix". The little grey frog-like creature just says "code 66788493 worthy protocol" then the ultratrix turns into a metal-like ball that starts flying. 

Azmuth: good luck ultratrix find someone worthy.

 as the octopus-like creature grabbed a sword and then killed Azmuth in a rage.

you could see a metal ball traveling the multiverse as it finally scans someone more than worthy. 

 we now transition to Izuku going into a cite were explosions are being made he was curious to see what was happening when he got closer he sees a bunch of heroes not doing anything and then he sees it he sees sludge like the one that allGirl captured then he realized that the bottle fell because of him, that person inside the sludge was suffering because of him. 

 But then it happened     

Izuku: I looked at the sludge and I saw her Katsumi her eyes were pledging for help he started to think what to do but then he realized that he was running full force then I though the backpack in his eye which seemed to hurt him then I try to take Katsumi out of the Sludge 

Then I started running and then I threw the bag in the sludge eye 

Sludge: Ahhhhhggggg

Izuku then started taking sludge off from Katsumi 

Katsumi: Izuku what are you doing 

Izuku: I have no idea I just saw ur eyes and my legs start moving by themself but I am sure that I will not let you die. 

These words hit the bystanders because they were the words of a true hero.

when the sludge villain recomposed himself and then pushed him off

Toshi (I don't know how to call her.): kid watch out 

Izuku then started dogging attacks from the sludge villain but then it happened the sludge villain cut of a part of izukus face and his left arm everyone looked in fear and astonishment as izuku stand up. 

Izuku: I am not letting you touch kachan 

when he said this a metal ball started coming from the sky and in a green flash it hit izuku and then everyone heard Ultratrix engaged starting protocol 54364 DNA unison survival chances 0.00001.  Then there was another flash and then a robotic voice said the process was a susses.

Izukus look

Izuku: tera spin, fussion 4 arms

Then there where a bright green light that blinded everyone and then there was a alien instead of the boy 

he then went in his shell and started spinning with a high velocity that created air wind that destroyed the sludge villain, living katsumi with a shocked face because what happened then there was another green flash and izuku was standing there in the floor unconscious.

Katsumi:  izuku!!! she hugged an uncoucios Izuku. 

All heroines were surprized because men got a quirk.

Katsumi called the hospital soon they were in the hospital