It All Depends on the Hero's Self-Guided Strategy

Changsun Yuer died at a young age, and her soul was accidentally locked into a strange system. In order to survive, she received two book-traveling tasks. 1. Turn the situation around and turn the cheating BE ending of the original book into a happy HE ending 2. Clean up the vicious female supporting role In order to facilitate the task, the system simply and rudely transformed her into the vicious female supporting role. In order to avoid being cannon fodder every minute, she took care of the heart of an old mother and worked hard to raise the male protagonist as her own son. She only wanted to beg for protection until the finale. She was so preoccupied that she didn't notice that her son, the hero, who was always caring like a mother, looked at her in a strange way...