Seo Ji-hoo suspects that the Blue Line is not a power line but a deletion line that burns complaint files.
Seo Ji-hoo is on the same side as Min Seo-ryeong, but he does not easily agree to the choice of turning on the lights.
Source stage
More discoveries
Moon Ha-rin is a dawn delivery driver and the sole witness who received a delivery completion notification for a door that does not exist on the 17th floor.
Moon Ha-rin clings to the fact that the number on her non-burning visitor pass matches the order number on her thermal bag.
Joo Ah-rin is a transfer student who arrived after her older sister disappeared. She strives not to miss her sister's roll call response from behind the white door.
Joo Ah-rin sees her sister's face in a student ID photo left unattended, but she also read the replacement student section on the return log.
