Sign-In System: I Got the Herrscher of the Void Core at the Start

Truck-kun strikes again! Lin Ming thought he'd landed the ultimate isekai deal—until he realizes he's stuck in an "ordinary" world with a looming college entrance exam. But when strange anomalies start surfacing and his golden finger finally activates, everything changes. Armed with the legendary Herrscher of the Void Core and access to the Ten Thousand Realms Chat Group, Lin Ming's mundane second chance becomes an extraordinary adventure across dimensions.