I Opened a Pawnshop Across the Myriad Worlds: From the Start, I Acquired the Eastern Emperor Bell

The protagonist, Mu Mu, inherits his grandfather’s old pawnshop. After bonding with a System, he discovers the shop can connect to countless worlds. While everyone else fights monsters to level up, he coasts to victory by “collecting junk.” He confiscates a black-iron sword and turns it into an electromagnetic blade, then uses a soul-absorber to become immune to dark magic. This “turning waste into treasure” approach transforms Mu Mu from a poor kid who can’t even afford his electricity bill into a “creditor to all worlds” whose mood even Hongjun has to watch carefully.