Female protagonist who transmigrated to this world over a decade ago. She lives in District D of F171 Port's Black Port and is the only person in the district who can make weapons. She built all the self-defense mechanisms in her house, created White Cards, and extracted poison. She is clever, bold, calm under pressure, and has a researcher's curiosity. She is restricted from leaving Black Port. When given a legal citizen identity document by the attacker, she used the alias 'Rune Mountain' with male gender.
