My path to becoming a demon princess

I was reborn as a daughter of a nobel family that didn't want me. But how would I escape and become successful when it was impossible to compete with my ridiculous amount of siblings. There was a hidden catch in all this I was reborn in another world where there was magic and training my naturally abundant magic may be the only way for me to live a good life. Be careful of occasional smut later on in the story as well as a slight bit of gore. 18+.