Midoriya Izuku, The Last Human

Eighteen years prior, there was a war. A war between robots and humans. This war led to the extinction of humankind as a whole, well, all except for one, Midoriya Izuku, a newborn baby. As his parents knew they hadn't much time left to live, they entrusted their son to a dear robotic friend of theirs named Toshinori, and they were killed shortly after. Toshinori may have not known much about raising a child, but he would do what he could and raise him as his own in order to fulfill his dear friends' dying wish. On his birthday, eighteen years after those events, the house where Toshinori and Izuku had lived in for so long was destroyed, and with that Izuku was no longer safe and hidden. This isn't enough to shake him though. Izuku will do what he can to avenge his kind, regain his peaceful life with Toshinori, defeat the evilest robot of all, and finally get his damn pancakes.