My Adventurer Class Is Rodent

Kewici transmigrates to a fantastical otherworld. In a world where monsters are as common as dogs and adventurers are everywhere, people have argued for three hundred years over which profession is the most important. Mages, priests, warriors, knights, rogues… But none of that has anything to do with Kewici. Until “Can anyone use Fireball?” “I can do a little.” “Strike with your sword! His weakness is sword strikes!” “I can do a little.” “This chest is locked!” “I can do a little of that too.” “Where’s the priest? We need a priest!” Kewici quietly raises his hand. “I can do a little of that too.” … Then the receptionist at the Adventurers’ Guild hands him a registration form. “So, Mr. Kewici, what profession would you like to register as?” Kewici rubs his chin and tentatively asks, “Have you ever heard of rodents?” The receptionist: ?