Kuroko Smith ( 黒子 Sumisu Kuroko) commonly refered to as Ms. Smith or just Smith, is Kimihito Kurusu’s Cultural Exchange Coordinator. She checks up on Kimihito and his wards on a regular basis, constantly reminding him that any violation of the Cultural Exchange Between Species Bill will result in his arrest and the deportation of the exchange program participants. These violations include interbreeding (initially) or violence between an extraspecies girl and a human. Usually irresponsible, Smith shows up when it is inconvenient for Kimihito and his guests or when it is too late to provide them with important information or help.