Bang: "never come back ever again."

He said as a beaten up Izuku was leaving the dojo for beating up the rest of the disciples. After Bang returned from his hero work, he saw the massacre Izuku had done, he brutally beat the leaving shit out of him and expelled him from the dojo. After that day, Izuku was living in a hut in a forest outside Town.

Izuku: "I will hunt down every last hero there is on this planet".

Izuku had begun hunting down every hero he saw. Heroes such as gunhead, fourth kind, death arms, majestic, master driller, funkman, a shit tone of C class heroes such as tank top vegetarian, battery man, a few unknown C class heroes and last but not least kaumai woods. Izuku was known as the hero hunter and was popular among both heroes and villains.

During these 2 months of Izuku's hero hunting, a lot of events have happened. The usj incident, sports festival, deep sea king incident, which was taken care of by an unknown hero, and the alien invasion.

Present

Izuku was walking by the road near the forest as he encounters a C class hero.

Izuku: "you must be a hero if I'm right... so it's huntin' time!"

Mumen rider: "i'm mumen rider. What's this about hunting?" he asked as he steped out of his bike. "you're not one of my fans?"

Izuku: "well guess what... You're right!". He said with a grin. "help me become a true monster".

Izuku POV: "the more i defeat... the more monstrous I grow!"

???: "we found you!"

???: "is it really him?"

???: "you were easy to find!"

Izuku: "huh?"

Izuku looked behind and sees an entire group of muscular men behind him. He sees a familiar face before realising who it was.

Tank-top vegetarian: "we owe you for the other day, hero hunt...".

before he could finish his sentence, Izuku knocks him out with a single punch and derides the unconscious hero.

Tank-top vegetarian: "GAHHH!"

Izuku: "are you here seeking vengeance tank top vegetarian. I left you with an inch of your life, and now you throw that life away? That's some next level stupid. Your muscle head friends won't be leaving alive either" he said with a cocky smirk "NOW DIE!"

before he can land a blow, he is punched by something and sent crashing several meters.

Izuku: "WHAT?!"

???: "I heard you gave my guy a hard time."

Izuku: "S class?! HYA HA" he laughed in excitement "I've caught a big one! YAHOO now I'm pumped!"

Tanktop Master raises his fist and punches the concrete floor as he uses his Tanktop Blow to unbalance Izuku, and then rushes at him, using his Tanktop Tackle, sending Izuku flying.

Tank-top master: "TANK TOP TACKLE!!"

Tank-top tiger: "way to go master! Now that bastard-"

Before they could finish, they saw Izuku as he spins in the air and lands delicately on the ground, shocking the other Tanktop members. Tanktop Master is shocked by his resistance.

Tank-top master: "who in the hell... is this guy? Is he even human."

few moments later

Tank-top mask: "another Hit!"

Tank-top black hole: "the tank top punch!"

Tank-top jungle: "a tank top allows ease of motion for twice the power!!"

The rest of the Tank Topper Army is convinced that Izuku is almost done, but Tanktop Master is not so convinced.

Tank-top master POV: "he's human... there is no doubt about it... but...

Izuku coughs up blood, and when he looks back up, he sees Tanktop Master preparing to punch him.

Tank-top master: "sorry but I'm finishing you off!"

Mumen-rider: "NO WAIIIITT!!"

before Tanktop Master can land his punch, Mumen Rider intervenes, getting in the way of his punch.

Tank-top master: "Mumen rider!!"

Mumen rider: "Aren't you ashamed of yourself?! An S-class hero killing a mere punk?! The fight is over already! He's hurt so bad he can't even move!!"

Tank-top racer: "huh? What are you talking about?

Tank-top jungle: "he shouldn't have been picking a fight with heroes!"

Tank-top tiger: "you idiot! You're just a c-class rank 1 anyway!"

Tank-top black hole: "outta the way! We're gonna teach him fear!"

Tank-top master: "that's enough guys. He's right, i didn't master tank top to fight ordinary people."

Izuku POV: "the hell are these guys talking about". He thought to himself when he heard tank top master calling him.

Tank-top master: "hey you! If you've learned your lesson, swear that you'll never hurt anyone ever again."

Izuku turned back and seemingly walked away.

Izuku: "fine... sorry for causing trouble..." he turned around "as if. I'm still gonna kill all of you!"

Tank-top master: "yeah. I figured much. I'll take care of you here and now."

Tanktop-Master was prepared for such an outcome, and punches Izuku in the face, but this time, Izuku is able to counterattack with Water Stream Rock Smashing Fist by using the momentum he gained from Tanktop Master's punch to increase the power of his punch which goes in the direction of the hero's punch. His fucking face.
Izuku: "whoops! I just used the old mans technique. God i wanted to avoid it so much... oh well, no need to be picky."

Izuku proceeds to dominate Tanktop Master with a series of punches with each one following a blue water stream, and then with a final attack which slams the S-Class hero into the wall, fracturing it several meters horizontally.

Tank-tops: "whoa..."

Tank top master was bleeding from all over his face and was now on his knees as the hero hunter was standing on top of him.

Tank-top master POV: "he hid his true power?!"

Izuku: "an S-class hero on his knees!!"

Tank top master: "HMPH! Don't be ridiculous, I was simply caught off guard"

Izuku: "HA HA HA! Really?!" he mocked him "then I'll Suprise you again. Sit there and watch... As the monster Izuku Yagi... eradicates your entire crew!

Tank-top master: "Izuku Yagi?!! You're all mights son!"

Izuku: "tchhh... i never knew him." he said coldly as he began walking towards the tank-tops.

Tank top master: "W-WAIT! DON'T TOUCH THEM!

Mumen rider: "JUSTICE CRASH!!"

he attempts to stop Izuku, only to have his head bashed against the ground. He repeatedly bashes his head into the ground, causing a pool of blood to form around his head. Izuku then holds Mumen Rider's head up to the rest of the Tanktop army and taunts them to come and fight him.

Izuku: "see this? Now it's your turn!"

Tank-top master: " YAGGGGGGI!"

Mustering up the last of his strength, Tanktop Master attempts to take Izuku by surprise, but Izuku predicts the hero's moves and punches behind him and hits Tanktop Master's face. As Tanktop Master's consciousness slowly fades, he falls to the ground, defeated.

Izuku: "I'm done with you... tank-top master. Now then... i guess I'd better clean up the rest of you."

Attempting to avenge their fallen leader, half-a-dozen of the Tanktop members attempt to rush izuku to which he effortlessly knocks them out using his Water Stream Rock Smashing Fist. One of the remaining Tanktop members attempts to punch izuku, but the Hero Hunter dodges, jumps up against the wall, and elbows the Tanktop member in the head. izuku proceeds to beat down the remaining Tank Toppers through some unknown means or rather for fun.

Izuku: "guess that's a great way to make myself stronger." He said to himself as he began walking away.

The next day

All might: "wait what!!"

He yelled in a suprised tone on the phone as he got up from his chair.

All might: "right... are you sure that was him?"

??? (on the phone): "without a doubt, if you ask me, it was all your fault it came to this, I've already asked Bang and bomb to help me find him and maybe put a sense to him. Although this isn't the first time he's done this. He hunted a lot of C-class hero and low-ranking heroes, but now he hunted a few pro heroes and with Tank-top master on the line, he's going to be noticed by the public. And it's bad news for you since he might expose you for what you did to him.

All might: "r-right... I'll figure it out later. Let me know if you find him... gran-Torino"

Gran-Torino: "Toshi, he won't forgive you if he finds out you gave one for all to Izumi and not him. Since she already has a quirk and izuku doesn't, it wouldn't make sense on why you did that, but i respect your decision."

All might: "thanks gran-Torino, let me know if you need anything". Hangs up.

Meanwhile

Kirishima: "did you guys see the news".

Kaminari: "yeah... the hero hunter fought tank-top master!"

Sero: "b-but how?"

Mineta: "i know right?! He's an S-class".

Tsu: "apparently the entire tank-top army quit the hero association because they were beaten up by him".

Lida: "fear not my fellow classmates justi-"

Bakugo: "shut the fuck up four-eyes".

Lida: "oh my great lord! Bakugo how can you say such violence words!?" he yelled sounding like an NPC.

Bakugo POV: "is it really that nerd... it's all my fault. Because of me he's a villain now."

Izumi: "guys can you calm down now?! It's only one guy, i bet the other heroes will beat him regardless... i hope." she said quietly.

Uraraka: "why does he do these things". She said disappointed.

Izumi: "..."

Bakugo: "..."

Suddenly Aizawa came in

Aizawa: "alright class... wear your PE uniforms, we'll be heading towards the training ground."

Everyone: "right!"

Meanwhile

???: "hmmm..."

???: "what do you think master, should we recruit him?"

???: "Shigaraki... i think we should wait a whil-"

Shiggy: "no"

???: "he's right Tomura... wait for the right time."

Shiggy: "right, we'll do what master tell us Kurogiri".

Kurogiri: "wtf..."

Meanwhile

Stitch: "i told you people the Hero hunter is dangerous."

Busho: "he's already taken out tank-top master, who know what he'll do next"

C Branch Operator: "the hero hunter isn't the only problem; monster appearances have increased for the past 2 months".

Jinzuren: "a lot of heroes are out of commission and quit from the association, we have to get rid of him."

Stitch: "but how?"

Busho: "we could ask a stronger S-class to take the hero hunter out".

Stitch: "try that and see how it goes. What's the threat level right now?"

C Branch Operator: "without a doubt it's tiger at max."

Stitch: "good... it will give us some time to prepare."
Meanwhile

The news: "BREAKING NEWS; the mysterious hero hunter has yet again took out another hero this week and it's none other than tank top master. The Tank-Top Army, once a formidable force within the Hero Association, has disbanded following their defeat at the hands of this enigmatic vigilante. With Tank-Top Master defeated, many are left wondering who will be the next target of the hero hunter's relentless pursuit."

Elsewhere, in a secluded hideout, Izuku smirked as he watched the news report on a small TV screen

Izuku: "just wait till i dismantle this society, Toshinori Yagi". He said with an evil grin.