Name: Machi Mori. Gender: Female. Appearance: Black hair, about shoulder-length. A highly motivated new customs officer. Although "GATE 24" is her first field assignment, she uses her overwhelming powers of observation to read the truth from "objects." She is interested in world cultures, customs, and goods. What she did before becoming a customs officer is a mystery. When she concentrates too hard, she sometimes stops hearing the voices around her.

Name: Keiichiro Hayami. Gender: Male. Appearance: Black hair. Immigration officer. An elite career bureaucrat from the Ministry of Justice and a candidate for executive leadership. He requested an assignment to "GATE 24" to gain field experience. An elite who pierces through to the "truth of people." He has a strained relationship (?) with Matsuyama, and they often get into minor arguments.

Name: Atsushi Matsuyama. Gender: Male. Appearance: Black hair. A young rising star who worked his way up from a high school graduate to a customs officer. He takes great pride in customs work as the nation's final line of defense, performing his duties with meticulous care during inspections. He has a strained relationship (?) with Hayami, and they often get into minor arguments.

Name: Nozomi Endo. Gender: Female. Appearance: Black hair, slightly longer than shoulder-length. A national civil servant belonging to the Animal Quarantine Service of the Ministry of Agriculture, Forestry and Fisheries. After graduating from university with a degree in veterinary medicine and obtaining her veterinarian license, she became an animal quarantine officer. A modern girl whose level of motivation is hard to read. Her work speed is surprisingly fast. She plays an active role in "GATE 24."

Name: Junko Tamai. Gender: Female. Appearance: Black hair, slightly longer than shoulder-length. A veteran customs officer with over 30 years of experience assigned to "GATE 24." She always has a smile on her face and brightens up the team.

Name: Akihiko Seike. Gender: Male. Appearance: Black hair. Chief Inspector. The leader of "GATE 24." A somewhat unreliable middle manager who often defers to Hayami and others for decisions.