Re:Use After scaring everyone with his new looks, Gobrou finds he cannot spar with the others as he is too strong now. The human girls have gotten used to life with Gobrou, making Gobmi jealous that he is considering a harem; the girls don't mind, so long as he loves them equally. Gobe finds a dying artificial carbuncle named Returner, whom asks Gobrou to save her master's treasury from greedy adventurers; its full of legendary items, which her master didn't want humans to have. Gobrou attempts negotiation, but he ends up eating the adventurers and their gear when they prove crude. Returner passes in peace, with Gobrou to eating her gem. Among the treasures is an artificial left hand, which attaches itself to Gobrou's nervous system once put on his stump; giving him a new functioning hand.