Hajime Tsukamoto

Tsukamoto is presented as a professional security employee responsible for protecting a large and technologically sophisticated commercial complex.

His limited role does not provide extensive information about his personal life or temperament. He primarily functions as part of the staff responsible for the building during its opening preparations.

Tsukamoto's position as head of security gives him professional knowledge of building access, security procedures, restricted areas, and emergency operations.

He has no extraordinary abilities established in the film. His expertise is practical security management within the Twin Towers.

Tsukamoto is present as the Tokiwa Group prepares the Nishitama Twin Towers for their grand opening. Because the complex is not yet open to the public, access control becomes an important element when Iwamatsu Oki is murdered inside.

The situation escalates from a murder investigation into a large-scale emergency during the opening party, forcing staff, police, and guests to evacuate the towers.

Tsukamoto remains a secondary participant rather than a central suspect or detective, with his role tied primarily to the operation and security of the building.

Mio Tokiwa is the president of the company operating the Twin Towers where Tsukamoto serves as head of security.

Chinami Sawaguchi works in the same complex as Mio's secretary.

Hidehiko Kazama designed the Twin Towers whose security Tsukamoto oversees.