Chapter Text
Midoriya Izumi, at an early age, thought that life was great. He has loving parents, Midoriya Hisashi and Midoriya Inko he also loved his twin brother, Midoriya Izuku. But everything changed when they turned 4, he developed a quirk more powerful than their father's, while his brother didn't have one.
At the age of 4 he saw his brother getting abused by Hisashi just because he didn't have a quirk, he tried stopping him since he knows that Hisashi won't hurt him. It got to the point where he had to pretend to be Izuku, but he was always discovered every time he loses control over his quirk.
The abuse stopped when Izumi threatened to destroy Hasashi's quirk and kill him. That threat was the very first step he took toward evil. He didn't mind it since it was just a step, he can always come back to the good side. That's what he thought.
Their father started to train him, first, it was just a simple mix of martial arts until it evolved into practicing his quirk which is destroying other people's quirk.
While he was mostly with their father all the time, his twin brother Izuku was living the life of a normal child, which was fine with him since Izuku was happy. They still had time to be together but Izumi had to stay hidden.
He was the secret twin, all his records were deleted and because of that, in the system, there was no one called Midoriya Izumi.
As they grow older, he discovered that Hisashi was the most wanted criminal in Japan also known as All for one, the king of all evil. Hisashi told him that with his quirk he can destroy the hero society that is making Izuku suffer.
At first, he didn't want to but when Hisashi showed him pictures and videos of Izuku getting bullied and abused. He didn't hesitate to agree to become the most powerful villain in Japan, he wanted to surpass Hisashi just to protect his brother. That's when he completely dived into evil while making sure his brother was innocent.
Good and Evil that's what they are. Izuku as good and him as evil.
His brother was oblivious about everything, he didn't know that their father was All for one, and he didn't know that Izumi was evil and more powerful than their father.
While Izuku lived a normal life, Izumi lived a life full of evil.