"This key... is it a general hospital key?"
As Han Dong was unlocking the door, he completely ignored the other conditions in the corridor, focusing entirely on the unlocking process... If he failed, he would quickly move away from the hidden door, pretending to be a regular freight handler.
When the key was inserted into the lock, the 'V.O.I.D' mark on the surface shimmered slightly.
A strange mucus membrane formed on the surface of the key, which matched the lock of the hidden door on its own, easily unlocking the hidden door.
"You have entered the joint management area - Derry Town Central Hospital ["Morgue Corridor"]"
"I actually found the right place..."
When leaving the motel, Togu had given him information, specifically stating that the unnamed female corpse - Jane Dole, as Derry Town's prosecutor and medical examiner, had a certain connection to the hospital's morgue.
As a result, Han Dong deduced that the key was connected to the morgue.