Not really recommended unless you understand korean since you'll have problems with quest.

The game is generous, the gameplay is ok but they broke their game, you see they give you this item that rotates hero in three slots and if you press ok you will get one of the hero's in display but if you see heroes with red frame or the fancy frames then don't  hope you'll ever get it, i once landed 2 red frames but instead i got a hero that wasn't even in the list, i would have understand if i got the normal one but no, i also once landed a fancy gold frame, black frame and a fancy blue frame but i got a 6* frameless hero.... Nice game but fucked up