Echoes of the Corrupted {MHA OC AU Fan-fic}

In a world shattered by a brutal plague of corruption, Kojo stands as one of the last few untainted humans, driven by the loss of a few loved ones to the disease that turns people into soulless monsters. With the weight of their loss on his shoulders, he sets out on a mission to destroy the source of the corruption - not matter what the cost. But when he's attacked by a corrupted beast and survives only to find his arm slowly turning black, his world begins to crumble. Time is running out. Will he become the very thing he swore to destroy? Or is there still hope left in the darkness?

(Keep In mind there will be no affiliation of Canon characters in this novel, there may be mention, but I will not be appropriating characters for this story, the characters in this novel are Ocs alone)