give me spoilers please

Spoiler:















I read somewhere in the comment section that FL is really the duke's daughter. And the pink haired lady is actually the mom.

The duke and the pink haired lady used to be a lovely couple (i dont know how they end up separated, but my guess probably the evil brown hair guy) but in the first timeline where the FL died, the duke did search for his daughter (FL) but it was too late so the duke turn back the time using the sword in exchange of his most precious memory that is the memory of his lover? and his daughter. That's why he didn't remember any of them ╥﹏╥