Made Into the Main Character

After Tiarosetti learns from her Guide that sacrificing herself to save the male lead, Lexion Spero, and following the plot is the only way to return to her world, she desperately carries out her role. But confusion strikes when she wakes up where her story starts, and Lexion saves her before he should. The Guide states she's now the main character, and Lexion isn't the male lead! Can Tiarosetti find her way home, or will Lexion's inconsistent behavior shackle her to his world forever?

(Source: Tapas)