Cast as the models You Min-Sang and Kim Junhyun who gained popularity through the 'Big World' segment in KBS's Gag Concert program to secure the loyal users of the 2D action RPG in the action game market in which the 3D action RPGs dominate and promote it based on the concept of the 'Big World Battle League of the Actions' to make it popular among those in their 20s/30s.