YunaGreyworth's manga / #Fiancée(1)

I though it would be the cliché cute villainess shoujo isekai, but actually has some serious and mature feeling. Deep character personality development. MC is kind and strong. Still shoujo but better executed that some similar plot in my opinion. Mc found the reason of her uneasyness since young, she was reborn has the villain in a yandere otome game. For now, it’s battle against the bad end of her being stab by her own fiancé.