The dark side of the male protagonist's schizophrenia was a cold, mechanical, and perverted killer. He seemed to have transformed into an emotionless machine that only had wisdom left. He could design perfect plans and complete his crimes without leaving any evidence, leaving the police helpless.
From the moment Dou Jun took a liking to this movie and saw Dou wenqing, she understood that the personality of the perverted killer was too similar to Dou wenqing's.
Dou Jun hated, envied, and feared Dou wenqing the most. He was unwilling to be suppressed by Dou wenqing even though he was the eldest son. Thus, he always thought of torturing him one day and making him wish he was dead. This obsession had already turned into madness. Unable to truly realize it, she had used si Rong as a substitute and subjected her to all the abuse. She had also asked her to observe Dou wenqing and act as Dou wenqing better.
