[The new grade for the *Jongno 3-ga Underground Dungeon* is S+!]

“S+ grade?” 

Rifts, which had a higher priority for clearing, were divided into 10 levels, from Grade 1 to Grade 10, while dungeons, which were generally considered less dangerous, were classified from S to F grades. This was according to the classification method proposed by the U.S. At first, the system labeled both rifts and dungeons with alphabetical letters, but after international agreements were made, the system changed its labeling accordingly.

Up until now, there hadn’t been any dungeon higher than S grade. Thanks to the exceptional Hong Yeseong, …