Yusuke Nogi Yusuke Nogi is, at first glance, a mild-mannered and unassuming businessman working for Marubishi Corporation. However, his true identity is an elite operative of "Beppan," the Japan Self-Defense Forces' unofficial intelligence unit. He possesses exceptional information-gathering skills, linguistic abilities, combat prowess, and situational judgment. Due to being separated from his parents as a child and growing up in a harsh environment, he developed an alternate personality within him called "F." "F" exists to compensate for Nogi's weaknesses and fears, offering advice during critical moments. Contrary to his usual gentle demeanor, he acts calmly and boldly on missions, formulating meticulous plans while reading his opponent's psychology. Furthermore, Nogi believes strongly in his own justice; he possesses a kindness that prioritizes protecting human lives and families rather than simply defeating enemies. In the story, it is revealed that Nogoon Beki, the leader of the terrorist organization "TENT," is his biological father. The reunion with his father forces him to confront his birth, his past, and the truth about his family. He is the central figure of the story, combining intelligence, physical ability, and deep affection.

Mamoru Nozaki A sharp detective from the Public Security Bureau of the Tokyo Metropolitan Police Department. While pursuing Yusuke Nogi, he is a key figure investigating the truth behind the incidents. Calm and collected, he possesses excellent powers of observation and insight, making accurate judgments even in tense situations. He has extensive overseas experience and is proficient in multiple languages, including Mongolian. He is extremely serious and responsible regarding his missions, yet possesses a passionate side that seeks to protect his comrades even in difficult circumstances. Although initially in a position hostile to Nogi, he gradually comes to understand Nogi's true nature, and the two increasingly find themselves acting together.

A highly capable individual active as a collaborator for Mamoru Nozaki of the Public Security Police. With a bright and friendly personality, he is a mood maker who lightens the atmosphere even in tense scenes. Although he cannot speak Japanese, he communicates very smoothly using a translation app on his smartphone. Furthermore, he possesses a wide range of skills including driving, information gathering, and searching, supporting Nozaki from the shadows. He is a reliable person who is fiercely loyal, cares for his comrades, and acts without fear even in dangerous situations. He is expressive and charming.

Shun Kurosu An elite operative belonging to "Beppan," the unofficial intelligence unit of the Self-Defense Forces. Acting as Yusuke Nogi's partner, he possesses a high level of ability to judge situations calmly during missions. He is a skilled individual who excels in marksmanship and combat techniques, boldly taking on dangerous operations. While he usually gives a composed impression, he has deep trust and affection for his comrades, especially Nogi. In the battle against TENT, he becomes involved in harsh circumstances, and his fate is greatly influenced by Nogi's decisions.

Nokor A high-ranking member of the terrorist organization "TENT" and the son of its leader, Nogoon Beki. Possessing calm and intellectual judgment, he is a key figure responsible for the organization's practical operations. While he deeply respects and holds strong loyalty toward his father, Beki, he harbors complex emotions regarding the existence of his half-brother, Yusuke Nogi. Having spent his life with Beki since childhood to support his father, his affection for his comrades and family is very deep. He is usually taciturn and composed, but hides strong love and conflict within. His encounter with Nogi forces him to face his own past and the truth of his family. He is Nogi's younger brother and calls him "Brother."

Nogoon Beki (Beki) The leader of the terrorist organization "TENT" and the biological father of Yusuke Nogi. A former GSDF officer, he was once involved in intelligence activities overseas. He is calm, collected, and possesses extremely high leadership skills, earning absolute trust from the members of his organization. On the other hand, he has a warm and merciful side, cherishing his family and orphans. He loves his son Nokor as if he were his own biological child, and in the depths of his heart, he also cares for Yusuke, from whom he was separated for many years. Despite walking a harsh path in life, he sticks to his convictions and maintains his love for his family and homeland until the very end.

Kotaro Shinjo An investigator belonging to the Public Security Bureau of the Tokyo Metropolitan Police Department and a subordinate of Mamoru Nozaki. He is a serious individual with a strong sense of justice who approaches his missions with sincerity. Under Nozaki's direction, he becomes involved in the investigation of the incidents surrounding Yusuke Nogi and TENT. Despite his cautious personality, he possesses the integrity to act with courage when necessary. He has a high sense of responsibility as a Public Security officer and overcomes numerous dangerous situations alongside Nozaki and Drum. As the story progresses, he comes into contact with important information and secrets, showing his presence as a member of the Public Security team.

Riho Ota A brilliant system engineer belonging to the Finance Department of Marubishi Corporation. While she usually gives a quiet and modest impression, she is actually a genius programmer with advanced hacking skills. In the erroneous remittance incident that occurred at Marubishi Corporation, she is suspected of being the person who infiltrated the system, but complex circumstances are hidden behind the incident. She is one of the people who holds key information in the story and has a connection with Yusuke Nogi. While possessing high technical skills, she also has a delicate side that is easily pushed to a psychological breaking point as she gets caught up in the incident.

Satomi Sakurai The commander who leads "Beppan," the unofficial intelligence unit of the Self-Defense Forces. She gives top-secret missions to Nogi and the other Beppan members, coordinating operations behind the scenes to protect national security. She is a strict individual who is calm, excels in judgment, and carries out missions without being swayed by emotion. On the other hand, she trusts the abilities and judgment of her subordinates and carries a heavy responsibility as the one entrusted with their lives. She is a key figure who deeply understands Nogi's abilities and actions as he operates within Beppan. In the series of incidents surrounding TENT, she is forced to make difficult decisions between national security and the actions of Nogi and his team.

Hayato A dedicated AI for the Beppan Commander, Satomi Sakurai. An advanced system responsible for information gathering, analysis, and communication under the commander's instructions. It processes information calmly and accurately, supporting Beppan members during operations. It is an indispensable presence for the commander, constantly supporting rapid decision-making.