 If you liked
Dororo to Hyakkimaru
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 ...then you might like
Ousama Ranking
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Both main charechters are weak/dead/ reason to be hated by people because of their father.
Both MC brothers hates them for some reason
the sidecarechters are the main reason for the mc to continue figthing and also their only truth friend.
you easily can see the similarity between the series.