The one who made her a sword is the current empraror (Daylan's Father)
The reason FL chose Daylan is because it was discovered in the past timeline (when she was a living sword) that he was a one in a century genius. But because his mother didn't want him to involve in politics , he lived the rest of his life in shhadows , pretending to be ordinary but infact he was the matermind behind the wars and everything . Like the only other prince who came to his mother's funeral was able to become a king and all the other princes who bullied him and his mother were dead oneway and another . so, he was the real mastermind behind everything and all of these were exposed when he was dead and the historians found his diary.
As the FL want's to take revenge on the royal family or more specificly the empraror (who made her a sword) that's why she chose Daylan, who would be a genius empraror after killing the current empreror and the perfect pown for her
Hope this explanation helps and please read agin from the begaining to know the details .
I am on chapter 6 so far and I am confused from the very beginning.. Is Dylan the king/emperor who made the order to transform her to a sword and used her to kill everyone or is he someone else? Why did she target him?