After Being Transformed into Cannon Fodder, I Held the HE Script in My Hand

When she opened her eyes, Gu Xiaowan, wearing a red wedding dress, traveled through time and became a murderer. She is also the cannon fodder female supporting character in the novel "Dreams", He finally survived, but was repeatedly involved in strange cases. She just wants to live a good life, so why did she get the leading role script instead?