Straight To The 100th Floor

"Look! What's that?"

Everyone looked up as they endured the tremors. Some of them noticed the giant creature rising from the sky in the distance and cried out in surprise.

They saw a vast mountain floating in the sky in the distance. However, that mountain was square. There were countless empty holes and rock tunnels that rotated constantly. Many adventurers were fighting with magical beasts at the tunnels on each level. They should have been underground, but they were suddenly in the air. All of them screamed in panic.

The whole hill was like a giant Rubik's cube that was magnified countless times. Even those who had not entered it knew what it was.

"It's the underground city."

Nightingale stared at the distant sky and sighed.

She knew that Watson would do such a thing because she had been with him for more than two years. She knew the young man well—Watson was a person who sought convenience.