Venom Deku

Izuku, who was born during the age of the first quirks, was sold off to a research company owned by the government. They tested peoples abilities, along with human modification. Izuku was born with the ability to regenerate his body within seconds. The doctors put Venom inside of him, and ran a variety of tests on them for an unknown project.

Quickly, however, does the project stop, as quirks have become common amongst everyone, and all subjects were.killed and cremated. Izuku, on the other hand, had his memories wiped, his genes modified, and became the technical son of Shota Aizawa.