Shigaraki is not dead in the manga. The storyline has many twists and turns, and his character plays a significant role, so his survival adds to the ongoing drama and suspense.
In certain fanfictions, Shigaraki's redemption is tied to his past. Maybe he discovers some long - forgotten memories that make him understand his true self and that he doesn't have to be a villain. He then starts to use his power for good instead of destruction.
Shigaraki's origin is quite tragic. His real name is Tenko Shimura. He was born into a somewhat dysfunctional family. His father was abusive, which led to a lot of psychological trauma for him. His quirk manifested in a very disturbing way when he accidentally killed his family with it. This event was a major turning point in his life, setting him on the path towards becoming the villain we know in the My Hero Academia series.
The key elements are his family situation, especially his father's abuse, the manifestation of his quirk in a tragic way, and the influence of All For One. His family problems created an unstable mental state, and the quirk's accidental activation led to the death of his family. Then All For One's influence pushed him further into villainy.
The key elements are his family issues, the accidental activation of his quirk, and the influence of All For One. His family was troubled, and the death of his family due to his quirk was a major turning point. Then, All For One's influence pushed him further into villainy.
Well, Shigaraki's back story involves his family. He was Tenko Shimura at first. His family life was a mess. His father was a harsh man. And then that fateful day when his quirk emerged and he couldn't control it. He ended up losing his family in a horrible accident. This led to him being found by All For One, who then manipulated and groomed him to be what he is today, a powerful and dangerous villain in the My Hero Academia world.