another world portal opens, the world will be destroyed. All humans are faced with terrible monsters. Defend yourself and others. Many people die, can you survive?

dungeons, aweken humans, human level classes, objects with class -f to R. Everything is foreign, feels strange, never been like this

When the world is about to be destroyed, you and your best friend, Heeseung try to survive and rely on each other. You two are in class A. Quite high, aren't you strong? From class F, E, D, C, B, A, S, SS, R, you are in level A, quite proud

You two were given a task by the clan to clear a B-class dungeon. Just the two of you, of course, because that's easy

"Hey, quickly prepare the items to be brought, no need for too many, this is easy. Just a few healing potions and weapons" Heeseung said to you