I Thought I Was a Female Supporting Character in a Bloody Novel

[The pre-acceptance may change, but the core plot should not change. "I thought I was the heroine of a bloody novel, but it turned out that I was the only normal person in the family. Yunwu is the little transparent adopted daughter of a wealthy family. The mysterious system that bound her told her: "You are actually the female supporting character in a novel." The system spoiled her simple and crude supporting role life: When she was a child, she looked like Li Xunchuan, the lost son of the wealthy Li family. The Li family, who missed her dearly, adopted her from the orphanage and took her home as a substitute. After Li Xunchuan was brought home, Yunwu became jealous because of the neglect he received. He looked down upon Li Xunchuan and even beat and scolded his girlfriend. After the Li couple discovered that Yunwu refused to change despite repeated admonitions and even almost cost Li Xunchuan his life, they finally became disappointed with her. Yunwu was kicked out of the house, left to fend for herself, and died inexplicably. Important characters in the story include: The Li family couple who are not at home all year round. The second uncle, an artist with a casual and uninhibited personality. The flower of the high mountain brother who doesn't like to talk to anyone. The suave but cousin of central air conditioning. Li Xunchuan finally returned home after being missing for many years. His temper can be said to explode at the slightest touch. Combining the above elements, Yunwu felt that this should be a bloody novel. It should still be the kind that has elements of Mary Sue and Shura Field. Then I might be the vicious female supporting character in it. The system told her: "You must redeem important characters so that this story will not end in a BE ending where everyone dies." The system generously sent her several save locations and told her that she could be resurrected even if she died, but the number of times was limited. Multi-character strategy, redemption, powder-puff system, and multi-game archive slots. Yunwu jokingly probed: "The original work of the world I live in can't be this heartthrob Shura field novel or an otome game or something, right?" System: "..." The newly appointed system took a look at the title of the book - "Death Loop: The Night of No Survivors". Works are classified in: thriller, suspense, horror, and combat. The system fell silent, the system was shocked. Shura Field seems to mean a tragic battlefield. System: "It seems... What you said is correct?" Yunwu: "...?" Stop it, are you serious? Later she discovered that she was the only normal person in the family. Yunwu: Feeling tired. Intent: A story about finding love in confusion.