Villain made from heroes

Izuku's study of Overhaul

"hello there, "Deku saw the young blue-haired girl in front of him wondering what she was doing on this base.

As he began to close in, the girl quickly cleansed in fear as Deku saw that the girl was in fear when seeing him, making him wonder why she cleansed in fear when in front of him.

As he stood behind an arm reached to his shoulder being driven out of the room to face an angry Overhaul. "You shouldn't be here!"

Seeing his rage Deku softly remarked a quick excuse, "I just wanted to look around the base, sorry but I have to ask, who is she?"

Overhaul turned to see the little girl ignoring the green teen, "Someone who isn't important to you."

Hearing that made Deku question what the girl was for; she seemed of use to Overhaul, adding to that Overhaul can make Quirk nullifying bullets which are made from another quirk bringing him to a conclusion.

The blue-haired one-horn girl had the quirk which is used to make the bullets.

Whatever the girl's quirk is it is used to create the bullets.

Overhaul is experimenting with the girl using her quirk to create the quirk nullifying bullets which he would sell and distribute the quirk nullifying bullets, therefore, destroying hero society to have the yakuza's power return.

knowing this gave Deku ideas on how to defeat Overhaul, thus bringing a grin up his face.

...

A few days after Deku met up with the girl the boy then went on to talk along with Overhaul about what he believed.

When he found time to talk along with Overhaul he began to speak about a new plan, "Overhaul, sorry about what happened those days ago, but I want to talk about her."

The feared crime lord then looked at the young teen right before him in distain, "no, I don't want to talk."

Deku confronted him closer to the point where he could be killed but didn't care, "no, no I believe that we should talk, I know that you are making bullets out of her, I don't know how and I probably don't want to know how but aside from that, I believe that I can help you control her, just give me time."

The villain then looked at him able to kill him but won't as he begins to think about what the child is proposing, "how can you help me?"

Deku smiled as he commented, "Well, unlike you I know how to act around the children and I know how to have them act and behave in the way you want."

the Yakuza leader looked at him thinking about his words and how even when hearing him at the moment helped him realize that the boy was correct and that he was telling the truth, "ok I will allow you access at Eri but it will be under strict supervision."

Deku smiled as he heard the villain, "thank you."

...

As Deku was given access to the girl he was just given basic information about her; her name was Eri and her quirk was one of the most powerful quirks in existence.

Though he doesn't know enough about her quirk he explained that it was quite powerful so he began to think of what it could do; he thought that her quirk could neutralize other quirks or completely erase a quirk showing her as one of the most powerful individuals in existence.

As he entered the room he noted the black hooded member of the group watching him much to his annoyance.

Deku sighed as the member kept his eyes on him, "so your quirk allows you to make people say the truth or something more?"