The regressor only protects me

[By the studio that brought you <Genius Corpse-Collecting Warrior>!] 
Humanity has been designated as a disruptive species to the cosmic ecosystem.
A survival game, initiated by the cosmic overseers, begins to reduce humanity's population. At the final stage, Jae-hee, a regressed player, reaches a conclusion.
Only Kang Sion can lead this game to victory. A genius with exceptional intellect, Kang Sion, a regressor who lost in the previous game, unravels the death game with overwhelming abilities.