Spoiler
If I remember correctly the spoiler that I read. The ML transmigrated a lot of time to save the FL and to do that he had to kill the FL over and over (a number of time set) to save her from her destiny to die
He may have tought here that he had to kill her again to save her from destiny but in this life time he doen’t have to kill her as the number of time she died was enough (sorry I don’t remember properly the spoiler that I read but it is something like that)

Can someone spoiler me plz ╥﹏╥