Sawamoto Miwako

Chief of Section 9 of the Ministry of Interior Countermeasure Pact. A beautiful woman who doesn't look her age, Miwako is the chief of operations at matters involving countering international organized crime. A former bureaucrat of the Ministry of Defense, she is responsible for contributing to arming the police force with high tech weaponry. Her leadership has shown such effectiveness at reducing organized criminal activity that it has made her a target of a number of assassination attempts. Her prevalence despite this has earned her the nickname of "The Iron Lady".

Miwako is also the protagonist Ai's biological mother. She possesses a different family name because she divorced soon after giving birth to Ai, and because of this there is some distance in the relationship between mother and daughter. Nonetheless, she shows affection to Ai in her own way, such as arming Ai with the latest technology in nanotech armaments.