Firestarter

Slime guys are bad guys

Izuku stood in an alleyway, which most would view as weird but in truth, he was just chasing a dog that stole his sandwich, it wasn't until he stood under a bridge that he finally gave up, "stupid dog...if I could use my quirk I would have caught it." He turned on his heel and began to walk home, when a Disgusting smell surrounded him, looking behind him he saw a Sewer lid burst open as dark green sludge began to leave the sewer "Nope." He said as he began to Sprint away, suddenly something Slimy grabbed his leg, pulling him to the ground. He looked and saw a giant Sludge creature with two red eyes and Teeth "Ew." It began to pull him closer."You are a real Hero Kid. I didn't know he was in town..." Izuku didn't want to know what would happen, so he activated his quirk, as flames burst from his feet he freed himself from the villain, he landed on his feet a bit of way away from the villain.

"Gross!, why don't you go back to whatever Sicko's wet dream you slithered out of."Izuku told him, clearly pissing off the villain."Get over here." The sludge told him as it sends tendrils of sludge at Izuku, who blocked the attacks with torrents of Flame. The fight was cut short with an "I AM HERE!" followed by a "DETROIT SMASH!" And the Villain exploded, literally.

Izuku spent the next hour fanboying All might, getting an autograph, and helping him gather the villain in a large Sprite bottle. "Thank you, young man, Perhaps we will see each other again." All might said as he prepared to take off, "Wait I have a questi-" his question was cut short by All might taking off into the sky, Izuku watched after him and saw a Green speck fall from all might "The Villain!" And before he knew it, he was shooting into the sky, Reaching the bottle quickly, he then boosted his speed until he was flying alongside All might."WAIT!" he yelled out, alerting All might."What are you doing?! Self-defense is one thing, but it's still illegal to use your quirk in public!" All might yelled, "You dropped the villain!" Izuku yelled, holding the bottle up, gaining a surprised look from All might, who pointed to a rooftop, gaining a nod from Izuku, the two landed, and the building. Izuku handed the Villain to All might. "Here you go....before you go, I have a question."
All might grab the bottle and look at the boy. "If you hurry, then go ahead and ask." He knew his time was ending soon, so he had to leave this roof as soon as possible.

"Can I be a hero? Even if I have a villainous quirk." This question threw Toshinori a bit. It was not the question he thought he was going to ask at all.
"I don't know what you have been told before, but there are no such thing as Villainous quirks, quirks aren't inherently evil, so yes, even someone with a so-called Villainous quirk can be a hero....besides, from what I have seen of your quirk, you will make a fine hero indeed." after that he began to move to jump off the roof when the pain began to shoot up his body as Steam rolled off him, he felt himself shrink until his true form was all that was left showing. "Shit," he mumbled under his breath. He looked at the teen and saw Teenager freaking out, with two flaming feet. "Uh kid, relax."

"You. You're not all might. You are an imposter!" Izuku yelled out.
"You know those guys at the pool who suck in their gut to look buffer? Yeah, that's pretty much me." "What how why?" Was the answer he got so that's something, he lifted his shirt showing his wound "I got this in a fight about five years ago, Ruined half my respiratory system and my stomach is basically gone."Five years ago... then Toxic chainsaw did that?"Jeez kid, you know your stuff, but no. That chump may have gotten a few hits in, but he couldn't do a thing to me. This was a villain that wasn't on the news, I made sure no one knew about them."

Toshinori looked at the bottle and saw the villain was still unconscious which he was thankful for, "Look, Hero work is dangerous, but with your quirk, you could do fine, as long as you prove to whoever put it in your head that your quirk is villainous that there is no such thing as Villainous quirks." And at that, he turned and left, holding the bottle in his hands, and he began to make his way to the hospital.

Izuku stayed on the roof for a bit before making his way home, he had to take a train to get home as he lived quite far, upon entering his house he could smell cooking coming from the kitchen, walking in he saw his mother and father cooking dinner when they saw him they smiled "Hey Zuzu! How was your training?." "Good thanks, I didn't get to ask earlier. How was work?" "Good," his parents said in unison, his father got a job working at a local hero support company when he was seven and now was one of the leading executives, with the increase of money his mom finally was able to follow her dreams of becoming a lawyer, he was happy for them, but he did miss having them around during the days, it made his online school work easier. He was pulled from his thoughts by a marshmallow hitting his nose, "What the?" He then saw his dad waving his hand."Earth to Zuzu, I asked where your shoes went."  "Oh...uh, I sort of got attacked by a villai- oomph!" He was cut short by his parents rushing him to check him over."I'm fine, I swear. All might have saved me."All might, wonder what he is doing in town." His father said with a thoughtful look.

The night itself went by pleasantly, with Izuku hanging out with his parents before going to bed.
The next morning when he woke up his parents already left for work, which he was used to, he got on his computer and began working on his schoolwork, the online school did usually end up as a pain but it was defiantly a better alternative than public school.

That afternoon when he finished school he took the train to his kickboxing class, and then went to dogbah beach to clean a bit, once a section of the beach was satisfyingly clear he started his quirk training. Taking his shoes off, he ignited his feet, he then took off, first flying over the sand, he then began to fly over the water, he began to do various flight maneuvers, before diving into the water, after a moment under the water he burst out of the water by the beach his feet extinguished "Damn, I need more practice." After cleaning more of the beach and successfully drying off, he swung by his favorite sandwich place and headed home.

This schedule continued for the next ten months as he trained for the UA entrance exam. By the end of those ten months, he knew he was ready.