The Extra's: Accidental Rebirth.

In the year 2847, humanity's dominion over death, disease, and the stars is shattered when two cosmic entities transform Earth into their battleground. A reality-bending chess match tears through spacetime, unleashing monstrous entities impervious to human weaponry. Humanity is reduced to prey within a collapsing world, where hunters venture out knowing it may be their final day protecting loved ones. In this new reality, survival hinges on absorbing monster essence, a process with a staggering 73% fatality rate. Amidst this chaos, Yoo Seung-yoon is born, questioning his surroundings. The protagonist will rely solely on his intrinsic abilities and what he can discover, with every action carrying consequences. Patience is key as the intricate worldbuilding unfolds, revealing interdependent power realms where the protagonist's journey from weakness to becoming a perfect Singularity, eventually overpowered, will be revealed through unique skills, reincarnation, and a battle against cosmic horror.