“It’ll open…only if there’s at least five…?” Dalgil slowly read the words on the door.

“There’s seven of us, so isn’t it fine?” Ru Hiana said.

“Yeah, that’s right, but…” Dalgil tilted his head and put his hand on the door. While he was about to apply strength and push, Chi-Woo felt their surroundings lit up all of a sudden. It was especially bright around the expedition members.

“Be careful!” Dalgil, who had just gone through a terrifying experience in the fourth room, quickly pulled his hand away from the door. The rest of the expedition members also prepared to withdraw and go into battle formation, but the only thing happening was the light growing in intensity. Silence fell as the expedition members tried to assess the situation.

“The door,” Hawa called out, and everyone’s eyes shifted back to it. The shining light gradually gathered at the top of the ivory door to form a shape. The shape changed into a number, starting from 1, then 2 and 3 until it finally stopped at 5. The number didn’t go up further, and the door opened automatically.

“Hmm…is it over?” Dalgil lowered his iron club and murmured. It was somewhat of a downer for him after he got so worked up. “Let’s go out for now.” The expedition members went through the door with Dalgil’s lead. Just before leaving, Hawa turned around and looked at the door. Succeeded in entering...