The protagonist is a noble girl who comes into a modern day otome game (or really just an otome game) as a background character and because she doesn't know what an "otome game" is she keeps getting in the way of the plot. Thats all I remember...
Is it I’m Spying on the Heroine in an Otome Game World...? But MC is not a Reincarnator... maybe I got this wrong
Another way to think of this is a person from the past came to the the modern day. no its neither of those. nope not that either. its more like https://www.novelupdates.com/series...me-changed-the-scenario-without-realizing-it/ but the mc is a girl
YESS thank you!!! (i think there might be another like this but this is the one i was looking for!!!)