 If you liked
Rokka no Yuusha
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 ...then you might like
Mushoku Tensei: Isekai Ittara Honki Dasu
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they both are fantasy and a profound history. Rokka is about a battle against the majin, some kind of magic demon who wants to destroy the world. mushoku tensei record about a character who can remember his past life and now are in a fantasy world when human and demon race are in a tense relatioship.