9. Zenitsu
The only reason Zenitsu isn't hated by the audience is because he's not a demon, doesn't kill people, and doesn't eat people.
Except for this trait, Zenitsu is overall a lost piece of the story, especially when he is interested in Nezuko, Tanjiro's younger sister. He may be manipulative, but the truth is that Zenitsu is quite cowardly, mean, and often overreacts to every problem.
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