Hero Who Returned 10,000 Years Later, A My Hero Academia Fanfiction

Izuku Midoriya fell through a rift... straight into Hell.
Ten thousand years later, the boy who once dreamed of saving people has become something far more dangerous scarred by endless war, sharpened by demons, and fluent in survival and sarcasm. When he finally escapes back to the world he left behind, the hero everyone remembers is gone... and in his place stands a man who knows every scream in Hell by heart.
And this time, he's not fighting for anyone's approval.