Boku No Hero Academia Rubber Edition

A few weeks after the sports festival ended and still no one wanted to take me as a intern in their hero agency, when i asked All Might about it, he just shook his head and said that he had someone special for me in stock, he also shuddered, he seemed scared of something for some reason?

While those weeks were gone for Izuku his classmates were all under the supervision of top pro heroes, they were trained and helped to develop their quirk and also learn combat techniques to supplement their quirk's or either supplement a part that their quirks wouldn't help with.

Katsuki was with Best Jeanist, Shoto was with his father, Uraraka was with Gunhead, everyone was already training hard with their intern pro heroes, but our Izuku was just doing whatever else he was doing since he got his quirk, physical training.

Now Izuku needed to add 500 KG weights to his body to make the training harder so his body could adapt to the weight and increase it's muscle mass, with more muscle mass and power, he would be able to control his gear 4, and one for all better, gear 4 especially since it was basically a muscle baloon. The sturdier the muscles the better and longer would be the use of gear 4.

One day after school Izuku finally got his internship, All Might himself praised the one who chosed him and told Izuku that he himself was trained by him.

While All Might didn't tell Izuku much, Izuku deduced that his teacher must be pretty old if he trained All Might. So on the same day Izuku visited the address All Might gave him. Izuku arrived at a rundown house, it also seemed pretty old like it would fall any moment.

He knocked on the door and when no one responded he opened the door slowly entered and said:

"Anybody here?"

When he looked down he saw a little old man with what seemed like blood splattered below him, Izuku tried to help him up and see what was the problem but the old man immediatly got up himself and just said that he dropped some sausages with ketchup due to his bad attention.

Seemingly the old man remembers something and calls Izuku Toshinori, Izuku didn't really like to be called by All Might's name but since he was old he let it slide, the old man also say's that he will come back in his hero costume so he could train him to use one for all more beneficiatly, when he returned he was wearing a costume which consisted of a full body monochrome suit along with a yellow cape, a belt with the letter "G" on it, very thick yellow gloves and boots, and a dark domino mask which resembles two diamonds.

But somehow the old man forgot who Izuku was again, angered a little by his games Izuku pretended to leave, but the old man suddenly appeared in front of him and said:

"Yo young man, you shouldn't be so hasty, i can teach you to control one for all better, the way you are going on with it isn't perfect and it would take you a lot more time to master it that way."

"How do you know about it?"

"I can see it from your muscles and they way you handle yourself, you try to build up muscle mass to whitstand one for all's strength enchance, it is a correct approach, but this way you didn't train your control at all, you don't need a extremely strong body to use one for all at 100%, but you need very good control, it is also true that you need a strong body, but control is essential, even though your body is a bit away from being strong enough to gather 100%, i can guess right now you can only use 35% or so isn't that right?"

"Well, thats right, it seems All Might was right, even though he is a bad teacher, he learned good things from you."

"That brat Toshinori, whatever i will tell you how to control one for all better, i saw the live broadcast at the sports festival so i know you are very strong so i won't fight with you, these old bones won't be able to keep up with you youngster."

After they talked Gran Torino, who told Izuku his hero name or Sorahiko his real name, started to teach Izuku the way to control one for all better. He firstly explained that the way Izuku was using one for all was the most basic way, and he started to teach him the more ways it could be used, one for all was a stockpiling quirk, which stockpilled power from other past users, but it didn't stockpile only muscle power, it also stockpiled mental power, so if Izuku could use one for all on his brain he could increase his thought process so much time would feel like it stopped for him.

But there was a drawback, if the brain wasn't strong enough it could give the user a giant headache and it could also pop head blood vessels, but it wasn't a problem for Izuku his brain was strong enough he was very intelligent, he was basically a genius. He could use this aspect of one for all easily without any drawbacks.

Izuku was standing crosslegged in Gran Torino's house he was viewing himself inwardly looking at the pure lightning that was the one for all quirk in his body, Gran Torino said he needed to tame this lightning and push it all over his body which would integrate it with his muscle bones, organs, it would make it easier for him to use one for all while the lightning would constantly strenghten him, pushing him forward to 100%.

While Izuku was training on the other part of things, therer was trouble, the pro hero Ingenium brother of Iida Tenya was almost killed by the infamous Hero killer Stain, even though he survived its speculated that he became crippled and he cannot profess as a pro hero anymore.

It seemed like trouble was trully brewing on the horizon, there were signs of it everywhere, but the UA students weren't aware of it yet, nor the teacher's but they would see it soon, trouble was just around the corner and the event of Iida's brother was just the beggining.