Assassin Izuku in Helluva Boss & Hazbin Hotel

Assassin Izuku in Helluva Boss & Hazbin Hotel

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WpMetadataReadMatureOngoing10h 26m
WpMetadataNoticeLast published Tue, Nov 18, 2025
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Fanfic
Hazbin Hotel
Helluvaboss
Ever since Izuku Yagi was four years old, He was announced to be Quirkless, his life had went down an infinite spiral, facing many hardships like getting tormented by his friends, even his own sister. On top of that, his own father and mother neglected him. After 10 years of physical and psychological abuse, neglect, and rejection, he finally was fed up and take Katsuki advice to jump form the roof. Then Izuku reawaken, finding himself in a strange city, which soon he realized was Hell, and when he looked at his hands, he realized that his body had turned into new demon body. Walking around the city, Izuku didn't know what to do, where to go, or how to even get back to his world. Until he noticed a certain billboard standing on top of a building. And that would be the beginning, of Izuku's journey as both an Assassin, and a Hero.
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The Fates and their mother Ananke are cruel mistresses. They had given Izuku a cruel and unfortunate fate. Even as a young child his life was nothing to envy, being treated as a slave by his own mother and stepfather. He learned that life only brings misery the longer you live at a young age. All because of the misfortune brought upon him from being born a demigod with the fate of the world in his hands. As such he envied everyone with a better life them him. For example, his twin sister, Izumi Yagi. Everything and I mean everything he had ever wanted she had been given on a silver platter. She didn't know pain, she didn't struggle, she had a quirk. All she knew was a life filled with comfort and unconditional love while he experienced hell in every sense of the word. While she was trained as a hero he was trained as an assassin by the most wanted group in the world. She had everything Izuku ever and continues to desire. Except for her brainless mind. They say too much power makes you brainless, but Izuku would find out that it was only if you relied on it. He had soon found out he had power greater and more versatile than his sister. However, he knew he didn't need it. After all, with his mind, who needs the amount of power he wields. Some may say he is a genius, and he is, but who said even a genius didn't struggle for their position. Who said they didn't suffer the most? Who said they didn't struggle for the power...for the knowledge they wield? Whoever did is wrong, because those geniuses and their lives would drive the average being insane with grief, paranoia, or simply just insanity. This is the story of one such genius.

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