when izuku was chased by his sister and former friend he stumbles into a hole in the forest that lead to an abandon laboratory, in it he sees a weird spiral sculpture that had green writing on it, when he accidently turns it on his head is filled with knowledge of what it was and how it was made, along with it curse, but for izuku he dint lose his mind instead his head gathered the knowledge thanks to his high IQ that it didn't turn him or made him insane, but merged with his being, allowing him to use all of the necromorph powers, abilities, and forms, but with his power he can also infect others.
but all thing come with a price, he must consume human flesh daily or face starvation