They find it

"I should have said that, you also feel guilty and say that you are useless. Even though your assumption is wrong, without you my life is meaningless in this world. So you also don't say that you are a useless being."

 The two of them then continued to walk the streets in the hallway. And they finally found there was light from the bottom of the passage they were walking. They were certain that the light was coming from a hidden chamber within the long tunnel underground.

 "Let's quickly approach the source of the light." Lucas asked his girlfriend to speed up his steps so he could get to the source of the sound far down the hall.

 "Is there anyone there?" asked Alyura.

 "I'm sure it wasn't the person we found there," Lucas said. "But vampires. Vampires gather there. There are werewolves there too, I can feel their aura and presence. Very thin, but I'm sure it's the aura of werewolves. They're trapped there."