Onryō
In Japanese traditional beliefs and literature, onryō (lit. 'vengeful spirit', sometimes rendered "wrathful spirits", "hatred spirits", "resentful spirits", "ruthless spirits", "envious spirits", "dark spirits", "fallen spirits", or "downcast spirits") are a type of ghost (yūrei) believed to be capable of causing harm in the world of the living, injuring or killing enemies, or even causing natural disasters to exact vengeance to "redress" the wrongs they received while alive, then taking their spirits from their dying bodies.
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