The author accidentally slipped into a story he had cheated in before and became a vicious female supporting character with a miserable life experience. She had to complete the supporting character's plot step by step before she could return to her own world intact. She was still alive, and the supporting character was still the wife of the villain.
Author: "It's so difficult for me. I really don't like the male protagonist. You have to believe me."
Villain: "Come here."
Purpose: Oppose harmful arranged marriages and superstition