In a street in southeastern Musutafu...

Angela: Just.... What are you doing to her?....

We can see Angela hugging a little girl with gray hair and a horn with bandages in her arms and legs. Mirio was standing next to her while infront of them stood Overhaul, the leader of the Shie Hassaikai.

Overhaul: Yeez.... You heroes are so sensitive... Very well come with me its not something I like to talk in public.

Overhaul turned around into an alleh while the herors followed him.

Overhaul: You see recently I've had a lot of problems with Eri, she keeps defying me no matter what, they feel like they can and will become someone.

Overhaul stuck a finger in one of his gloves like he was ready to take it off. Eri noticed this and immediately jumped off Angela's arms and went running to Overhaul.

Angela: E-Eri...

Overhaul: Done with your tantrum already?

Eri gave a small nod in response.

Overhaul: Well sorry to bother you heroes.

With that Overhaul went back to his base along with Eri, he gave Eri to Chronostasis and then turned to one of his subrodinates.

Sub: S-sorry i-its j-just that I only took a small moment off a-and-

Overhaul took his glove off and waved his hand in his direction, seemingly erasing the top part of his body.

Overhaul: I have no time for excuses.

Overhaul began to walk away but then suddenly he saw as everything began to turn a bit mlre gray, he turned around and also saw Chronostasis with Eri frozen in place.

Overhaul: Chrono what are you doing?

???: Oh its not his fault my dear bird man!

Overhaul turned around but saw no one. He then saw a bright flash of light coming from a seemingly floating circle.

Then the flash fade away and there infront of him stood the one and only.

Izuku: Hello Overhaul.

Overhaul: You are....

Izuku: Izuku Midoriya! A pleasure to meet you! Yes quite the pleasure.

Izuku approached Overhaul to grab him by the shoulders at which Overhaul pushed Izuku away.

Overhaul: Get off me, I dont know what kind of disease you will give me.

Izuku: Hahaha! Oh please I assure you... I have been sick with every type of illness! So no need to ponder about.

Izuku began to look around Overhaul's base and then spoke again.

Izuku: Quite the lovely place you have here! Let me guess you call it... The Bird's Nest! Hahahahaha!

Overhaul: 'This is the guy who has terrorized the entire country.... His appearence is not one that would intimidate you.... And his personality.... He surely is crazy.... But those eyes.... Its like they only see prey..... And his aura is a disgusting one....' What can the King of Hell what with just a humble Yakuza like me?

Izuku: Well.... You see I have been keeping an eye in your most recent project!

Overhaul: Why?

Izuku: The screams of pain of that little girl are like music to my ears,

Overhaul: 'Yeah he is crazy....'

Izuku: But that aside, the idea of erasing quirks just sounds so amazing to me! And so I want to help!

Overhaul: You do?

Izuku: Of course! I can give you all the resources you need to fulfill your ambitions and even more! Of course all in exchange of a little favor.

Overhaul: 'What the hell is he planning' Favor?

Izuku: Indeed! Tell me, do you know what that birdy mask of yours represents?

Overhaul: Its what the doctors of old used during the plague.

Izuku: Indeed! But not any plague! The worst plague in human history that erradicated almost 50% of all lives in the planet... The Black Death, good times!

Overhaul: Sooo what? How does this relate to what you want me to do?

Izuku:

Overhaul took a small step back and widened his eyes a bit in surprise.

Izuku: You see scholars used to talk about the black death as an invisble hand, that brought death and decay to wherever it laid its fingers on and you my little bird, I think its time for you to leave the nest and embody what your mask represents.

Overhaul: So you want me to kill someone or some people?

Izuku: I know its not the first time you will kill! And its not even hard for you! After all I know when the gloves come off death is sure to come too.

Overhaul: So thats it.... Who do you want me to kill and why dont you do it yourself?

Izuku: You see in my last battle I was confined back to my own dimension, so now I can only present myself to you in this metaphysical state inside your mind.

Overhaul: It sounds like you broke physics with that.

Izuku: Oh please! Who cares about the first, second or the third dimension?! Especially when I can bring you 4th 5th and 6th of ascension.

Overhaul: Is that even possible?

Izuku: Oh my dear Overhaul! This might "overhaul" your whole perspective of reality, but, everything is possible when you are hanging out with me! Hahahahaha!

Overhaul: Okay, but back to the issue at hand, who do you want me to kill?

Izuku: Oh well you see in abouuuuut.... A week the heroes are going to raid your place!

Overhaul: What?!

Izuku: Yes! And I want you to be ready! So that when they come... You can finally release that devil within. I want you to make the suffer.... Hahaha they will never know what hit them. So you are in?

Overhaul: Fine I guess, so if I kill the heroes you will give me the resources I recquire?

Izuku: Yes! Although I also want you to not only kill the heroes but also everyone in the nearby urban areas, I want you to cause as much death as possible!

Overhaul: Fine then. If that is all, count me in.

Izuku: Very good then!

Izuku stretched out his hand covered in green fire and Overhaul shook it and with that, their deal was sealed.

Izuku: Okay then time to go! But remember! Reality is an illusion! The universe is a hologram! Buy gold! Byeeeee!

And with another flash of light Izuki was gone and everything was back to normal.

Overhaul looked around to see Chronostasis carrying Eri away. He shook his head and began to walk away.

Overhaul: 'Who knows what that lunatic's true purpose is, but as long as I can get a benefit from that is all good for me.... Now time to get ready to receive our guests.'

One week later....

The heroes and the police were stationed infront of the Yakuza hideout.

Angela/Mirio: 'I will save you this time, Eri!'

A policeman went in and knocked on the door.

Policeman: This is the police! Open the doors!

The doors slowly opened but then a hand came out and half the policeman desintegrated into a puddle of blood.

???: One execution fulfilled....

Overhaul stepped out much to the shock of the heroes and behind him the top members of the Shie Hassaikai stood as well.

Overhaul: Welcome heroes to our lovely home, sadly we are not taking visitors, so good-bye...