To Abandon or Be Abandoned

After completing all 200 endings of her favorite game "Nayla", a girl is given a 201st playthrough. She accepts and wakes up in the game as Claudia, Nayla's wicked sister who always meets a grim fate. Desperate to survive, she proposes a marriage contract with the cursed prince, Nathan, to achieve the goal of making a pact with five spirits. Meanwhile, the seemingly virtuous heroine Nayla is determined to frame Claudia as evil. Is Claudia truly the villainess, or is there more to her story?