Izuku Midoriya was supposed to help save his world but instead he was ripped from it. Thrown through a dimensional rift into a Japan similar to his own. He lands in a world where cursed spirits feed on human suffering and sorcerers wage invisible battles. Much to his shock however, One For All begins acting in mysterious ways. [Chapter remakes under way]

A broke American law student falls asleep over his textbooks and wakes inside the body of Kaedehara Kazuha, the fifteen-year-old son of a renowned botanist in Taisho-era Tokyo, 1914. The life handed to him is everything his last one was not. Loving parents, a quiet mansion in Koishikawa, a gift for poetry, and a strange sensitivity to the air that lets him hear and feel what others cannot. Believing he has simply been reborn into the past, Kazuha throws himself into the second chance, wandering the city he had only ever dreamed of seeing and treasuring the family he never had. But the wind has been trying to warn him. The suffocating unease he feels around certain people, the half-buried memory that stirs at the words "blue spider lily," the things that do not add up, he brushes them all aside, too content to look closer. Then, in a single night, the warmth he swore to hold onto is ripped away. Demons descend on his home, and his parents are slaughtered before his eyes. Broken and bleeding, dragged to the very edge of death, Kazuha is saved at the last moment by a scarred swordsman who cuts through the dark like the wind itself. And in that moment, the truth lands with terrible clarity. He was never reborn into ordinary history. The Tokyo he loved is a world where demons feed in the dark, and a secret corps of slayers gives its life to hunt them. This is the world of the Demon Slayer Corps, and he has been living in it blind. Now there is no going back to the quiet life. Grief hardening into purpose, Kazuha takes up the blade, his heightened senses turning the very air into both weapon and warning. Yet the deeper he is pulled into this hidden war, the more the old questions sharpen. What is the blue spider lily his father died chasing? What truly wore the face of the boy next door? And was the strange chance that carried him into this body ever chance at all? A leaf let go and drifted on the wind. Now it must learn to cut.

When an ordinary college student wakes up as Katsuki Bakugo months before the start of My Hero Academia, he knows exactly how the story is supposed to unfold. But changing too much could shatter the future, while changing too little means watching people suffer all over again. Determined to become the hero Bakugo should have been, he walks a dangerous line between preserving canon and rewriting fate. As U.A., the League of Villains, One For All, and the greatest heroes in Japan draw closer, every choice threatens to create a future no one-not even someone who knows the story-can predict.

Mark didn't expect to die and wake up in the world of My Hero Academia. He definitely didn't expect to wake up as Denki Kaminari, the class dunce known for frying his own brain. Mark refuses to be a comic relief character. He refuses to be a simple battery. Armed with a Harvard education from his past life and a dangerous understanding of physics, Mark sets out to rewrite Denki's destiny. By applying the laws of electromagnetism to his Quirk, he plans to turn a self-destructive power into a weapon of mass destruction. From working part-time for a terrifying mechanic to catching the eye of the Number 3 Hero, Mark is ready to show the world that the "dumbest" student in Class 1-A might just be the most dangerous one in the room. The goal is U.A. High. The method is science. And the result is electrifying.