 If you liked
Code:Realize - Sousei no Himegimi
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 ...then you might like
Sengoku Night Blood
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Both have the same historical elements, reverse harem , mystery and fantasy, the differences, were: the Girl in Sengoku was from another dimension while the girl in Code Realize is in her own timeline and setting, the chemical composition of the girl in Sengoku has that boosting power like an energy drink, while in Code Realize the Girl is radioactive toxic as in one touch and you're dead.