Horror Game? I Don't Play by the Rules

Ling Yuan is an ordinary high schooler whose life falls apart when a horror game starts trapping people in deadly instances with no way out. Facing creatures built to kill, he awakens a powerful Brutality System inside himself, which gives him access to three savage combat forms that turn the tables on the horrors hunting everyone else. Where others run in fear, Ling Yuan hunts.

His power grows with every instance he conquers, and he forms an unlikely bond with an SS-rank ghost who becomes his combat partner. Each victory spreads his reputation, and he earns the title Instance Shredder. His greatest challenge comes when the Nightmare Hospital breaks through the barrier between worlds. The final boss waits within that invasion, and stopping it will make him humanity's last hope.