This Double Shadow

She is a quiet and gentle Zhongci in the eyes of others. It is also the evil that no one knows about in the middle of the night. During the day, she was a silent student in class, enduring rumors and glares; In the dark night, another personality takes over the body, turning the suppressed hatred into a sharp blade. The memory is blank and the blood is stained. All the clues point to her, but no one knows that it is a dual soul. The teacher's pain back then became a scar in her heart that would never heal. Also raised the crazy shadow in the dark. When she finally recognized the murderer hiding in her body, What awaits her is a silent and complete death.