TV Series ”Mantis: The Killer's Outing”: Who is the culprit behind the copycat murders? ...His outline is revealed

*Contains plot summary and spoilers. In the TV series "Mantis: Outing a Killer," the identity of the copycat murderer is revealed.
Episode 6 of the SBS Fri-Sat TV series "Mantis: Killer's Outing," which aired on the 20th, recorded a viewership rating of 6.4% in the metropolitan area (according to Nielsen Korea).
The highest viewership rating reached 9.6%. On this day's broadcast, the identity of the culprit of the copycat murders in "Mantis: The Murderer's Outing" was revealed. The culprit was the serial killer "Mantis" Cho.
The victim of murder by Ng Yi-shin (played by Ko Hyun-jung) appears to have been abused by her as an adult. The closer he gets to the identity of the murderer, the more Cha Soo-yeol (played by Jang Dong-yoon) realizes he has hated his mother all his life.
Cha Soo-yeol witnesses the death threat of Park Min-ji (played by Lee Chang-min), a prime suspect.
This happened when he lured out "JOY", who was suspected of being a copycat criminal, to save Cha Soo-yeol. Cha Soo-yeol hugged Park Min-ji and screamed, "You can't die," but in the end, Park
Min-jae dies. Unable to prevent the plot once again, Cha Soo-yeol pleads with Jeong Yi-shin, "I think like you. I act like you. Please help me catch him."
The perpetrator's rampage continues even after Park Min Ji's death. The perpetrator calls again. Jung Yi Shin once again provokes the perpetrator. Jung Yi Shin's
Cha Soo-yeol was the only one who understood the reason for the provocation. The killer broadcast the next copycat murder live on his cell phone, and the police rushed to the location shown on the video. Jeong Yi-shin told Cha Soo-yeol, "I'm not going to kill anyone like him.
"You have to think like me, Jeongho," he said, calling Cha Soo-yeol's childhood name. A man named "Kang Yeon-jun" emerged as a suspect in the copycat murder.
Kang Yeonjun was a child who had a cat that died with a disfigured nose due to burns caused by abuse. While tracing Kang Yeonjun's traces, Cha Soo-yeol discovers that he may have undergone sex reassignment surgery.
Just as they were getting closer to discovering the identity of the culprit, the serial murder investigation team found out about the parent-child relationship between Jeong Yi-shin and Cha Soo-yeol, and strongly resented Cha Soo-yeol for deceiving them up until now.
Then, Cha Soo-yeol was devastated when he received news of the death of the hotel manager, the victim of a recent copycat murder.
The TV series "Mantis: Outing the Killer" airs every Friday at 9:50 p.m.
It airs on SBS at 10pm on Saturdays.