Battle for the World's End

Heavenly Demons, Hunters, giant mechs, Demon Lords, and superhumans.
The strongest beings from various worlds have gathered, staking the very existence of their realms on the outcome.
In a war for survival where defeat means total annihilation,
representatives from the "Ordinary World"—who possess absolutely no special abilities—are dragged into the fray.
Just as they are on the verge of being crushed by the overwhelming might of these monstrous beings,
an unexpected weapon is bestowed upon them.

[Synchronizing with game character abilities.]

Can Shin Ja-hyun and the representatives of the Ordinary World borrow the powers of game characters to defeat the true titans and survive?