Accusation

A few days passed and Ning arrived next to a beach on the westernmost southern end of the Starsoar continent.

He had learned that there was a dungeon here, underwater at that, and so he walked in. 

The dungeon looked like a long-lost palace, hidden underneath the sea and as soon as Ning entered, the palace would seep with water. So, there was only so much time Ning could spend in there before he fully drowned.

Ning wasn't worried though as he had cards to help him end this quickly, and he did. The Legendary class was so good that he ended up getting an overwhelming single clear, far faster than any party clear could be.

Once Ning cleared it several times, he found the best of his run and uploaded it online.