The Obsessive Male Lead Made Me the Female Lead

Welcome to The Adversary of the Evil Dragon!
I am a guide for travelers who have come into the novel.
You have become 'Tiarozeti Isol'
To return to your original world, you must complete the novel.

"You have to be happy… I will miss you."

Somehow, I fell in love with the male protagonist, Lexion Spero, and ended the story by dying for him, but strangely, when I opened my eyes, I was still in the novel...?

"The new main character is Tiarozeti Isol."
However, this time, not only have I become the main character-

"-Titi, choose me, not this damn fate."
Unlike the previous life, Lexion's obsession for her begins!

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?