I don't know if this is real but the Duke is his real father, the reason he can't remember his daughter and lover is because in the first timeline the Duke looked for our MC but he was too late (this is after our MC died) so he used the sword ( i think) to turn back time but the cost of that are the memories of his lover including the fact that he have a daughter.
Sorry for the bad english HAHAHA I also forgot their names so yeah.
I don't know if this is real but the Duke is his real father, the reason he can't remember his daughter and lover is because in the first timeline the Duke looked for our MC but he was too late (this is after our MC died) so he used the sword ( i think) to turn back time but the cost of that are the memories of his lover including the fact that he have a daughter.
Sorry for the bad english HAHAHA I also forgot their names so yeah.