4 parts Ongoing Izuku Midoriya became an adult at the young age of 4 years old. Ever since his Pro Hero mother emancipated him, brought out a large empty house near the Bakugos with barely any supplies or money and left a letter with fine words that will never leave him.
Yes, all that after torturous "training" and punishments to "strengthen" his quirk. Which turned out to be that Izuku has no quirk and is quirkless.
Also with all his blood-relatives turning their backs on him with his mother. Literally disowning him and forcing those opposing to cut contacts with him. And with Izuku's father out of the picture and declared missing but really thought to be dead.
Izuku was left to the hands of society and himself. Left to fend for himself and die by himself. With no one ever being there for him.
Literally no one as everyone avoided, mistreated or abused Izuku. Kacchan with everyone in school billing him severely. Inside school and outside. The teachers doing nothing or simply worsening the situation. The School Nurses did nothing and refused to lift a finger for his injuries.
Yet through all this Izuku wanted more than anything to be a hero. He craved it so much that he trains himself hard through it all. He works his butt off to do good in the world that did nothing but hate him.
Izuku didn't want to just be any pro hero. Izuku wanted to be a true hero. A hero doesn't just save people externally and physically but internally and emotionally. Izuku wanted to be the light to those clouded and surround in all darkness and chaos.
Izuku wanted to a be a symbol like All Might to others. Even though he is quirkless. He lacked a quirk that would let him take the U.A Heroes Course Exam. So he trained his body, mind, soul, spirit, energy, drive, dream and everything of him beyond the limits and expectations of High End Nomu.
Izuku wanted to be that Symbol of Pure Hope. So come watch Izuku show the world a true hero and finally find a family of his own!