I'm an Idiot, Who Let Me Join the Rule Horror?

When reality twisted into a nightmare, humanity's survival became a deadly game of rules. Nations must send champions into horrifying scenarios where one wrong move means mass extinction. The world trembles in terror—until the system picks the absolute worst candidate possible. Xiao Yi stares at his admission ticket, completely oblivious to the eldritch horrors around him. "Wait, is this the middle school entrance exam? Finally, a chance to prove I'm a genius!" Armed with spectacular misunderstanding and accidental brilliance, the least qualified person alive is about to break every rule... in…