MC is the warrior chosen by God to save the world and is stronger than both ML and 2nd ML (she saves their life quite a few times)
I read this years ago but I remember the FL being the strongest vampire alive
Later in the novel MC becomes stronger than anyone else. She beat the shit out of almost every love interest (only the ones that deserved it because they were being assholes)
MC is stronger than anyone else due to her demonic sword and her natural talent. The strongest people in the world (ML included) are at the level of sword master, but she's a WHOLE big level above all of them. In her past life the ML and 3 other masters had to subdue her together, and she still ended up killing them all
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