 If you liked
Koushaku Reijou no Tashinami
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 ...then you might like
Akuyaku Reijou nanode Last Boss wo Kattemimashita
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Reborn as the villain fated to be defeated by the heroin, the villainess try to reverse her fate. As she tries to scapes the death flags, she enchanters the characters around her gaining a vast amount of friends and supporters.... and maybe.. even love
The "heroine" is reborn as the villainess of an otome game she once played, and she constantly tries to change her fate, avoiding the red flags from the game. In both works the MC is also very smart and has amazing leadership qualities, creating her own business. They also somehow get romantically involved with rivals of the princes they were once bethroned to.
For both works the demographic is shoujo.