Suddenly I Decided To Become The Female Lead summary:

After I finished my SAT’s I was reading a novel about the pitiful Ludia who had no partner. The friend of the stalker villainess, who gets her executed. The pushover who followed her friend that brought her doom, also known as extra 1. …Why do I remember an extra who’s of no importance? Damn it, I became that Ludia! I made up my mind that I won’t die miserably and live on but… Hello, crown prince. Why are you straying away from the female lead, and keep getting entangled with me? And why does he get so delusional!! “What should I do? What if the crown prince really fell in love with me…” “Hm, that would never happen.” “Why?” “He was with me last night.” Since it happened this way, I might as well just snatch this man?!