Cannon fodder and female supporting role, a match made in heaven

(Can't write an introduction) As a vicious female supporting character who died just halfway through the story, Shen Zhaozhao unexpectedly awakened. She lived her life according to the character setting, but unexpectedly she was reborn again. In her new life, she had to live out herself, so with the help of the idiot cannon fodder in her previous life, she decided to follow the protagonists to exorcise demons and uphold justice. But why didn't anyone tell her that the idiot cannon fodder was not only not a idiot anymore, but it seemed that he had another identity... a demon. The problem was that this demon had superb acting skills. In the eyes of others, he was just a harmless and obedient junior brother. But Shen Zhaozhao knew that he was moody, killed people without blinking an eye,...