Moon Jo and Jung Woo.

It seemed like everything was over?.. The dormitory where the killers operated was closed, the killers were killed.. The people who remained alive were saved, including Jung Woo.. But he was still haunted by Moon Jo's last words, "See you in heaven..." He understood that he had caused him great pain, but... but he couldn't forget, he seemed to see him everywhere.. It was suffocating. Jung Woo suffered more and more every day. It seemed like he had a loving girlfriend, but she didn't... but Moon Jo was gone.. His crazy smile, literate speech, and bloody hands were gone.. Over time, Jung Woo began to go crazy, seeing Moon Jo in different places, asking to see him..

Jung Woo is a cheerful but reserved guy with a thin but healthy build, friendly but silent, works as an intern

Moon Jo is a crazy killer with many screams and victims behind him, who works as a dentist.