Saintess of the Golden Bow

I'm a normal American office worker obsessed with Korean web novels and comics. One day I get into an accident and die, only to be reincarnated as an extra in one of my favorite books – a BL tragedy fantasy novel.

I'm supposed to die in this world too so I can be part of the main character's tragic backstory as his lost love, but I won't lose my life again! So I survive my 'death event'. However, my unexpected survival causes a butterfly effect in the story, and suddenly I replace the main character of the novel and become the Saintess of the Golden Bow.

As the savior of the realm I embark on a quest to defeat the Demon Queen, accompanied by Levi, my valiant knight and the original Saint, the Mad Prince Noah and the High Priest Elijah. How many more times will I have to avoid death before I can bring peace to the realm again?