An ordinary person with no ambitions travels into a book and becomes a female supporting character, punching the protagonist and kicking the villain?
... Let's live a good life first and then talk about it
PS: The heroine is just a useless ordinary person. Because she will add elements from other works and incorporate other worldview settings, she is not completely original from beginning to end. She is rigorous in nature, so she is classified as derivative.
Intention: Never forget the original intention
Looking into the Distance