Interdimensional Pirates

Interdimensional Pirates- known throughout the dimensions as gangs of trained thieves who travel through worlds to collect magical and valuable artifacts. But to Kota- a 18 year old orphan boy, who lives paycheck to paycheck, struggling to survive alone in the city, oblivious to the existence of the other dimensions and artifacts- they were the people who stole his locket, the last thing he had left of his recently deceased grandmother. She was the only person who had ever cared about him, and he was willing to get that locket back, even if it meant stealing it from his sickeningly rich half brother's vault, becoming a wanted criminal and chasing down pirates to get it.