@Hakutou How to Be a Dark Hero’s Daughter is this the one? Im not sure because she has not pink hair but it is his you discripe it if I remember correctly???????
My favo action, reincarnation, rebirth, memories previous life, travel back time, murim and father daugther mangas that you muuuust read:
https://mangabuddy.com/manga-list/121252
https://mangabuddy.com/manga-list/121252