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Initially, she got involved to save her sister. Then, she had to take responsibility for Renfa's actions (because of which many innocent people died, the life of the unsuspecting Shura was almost ruined, and her parents passed away), but she still didn't kill her. And in the process, she also took care of ordinary people and her soldiers. Meanwhile, Renfa eagerly tried to kill her sister, who provided for her, constantly risking her life, and then rushed to save her. Moreover, the reason for her intense hatred was simply envy.