On the 23rd, Baekhyun wrote a letter to the Cheong Wa Dae National Petition titled "Punish the perpetrator n Doctorate, n member" in his Instagram story.
The n-case case is a case in which Joe Moo, who is called Doctorate, and many men have been made, distributed, and Gong Yoo, which are sexual exploits of women such as minors on messenger telegrams.
A total of 4.4 million people have been asked to disclose and punish all the people involved in the case.
“We need to investigate all members of the telegram n-room,” President Moon Jae-in said on the same day. “If necessary, we hope that a special investigation team will be strongly established in the National Police Agency.”
About EXO
Exo is a South Korean-Chinese boy band based in Seoul that was formed by SM Entertainment in 2011 and debuted in 2012. The group consists of nine members: Xiumin, Suho, Lay, Baekhyun, Chen, Chanyeol, D.O., Kai and Sehun.
 Wikipedia