Keiichi Nakagawa patrols from the Kameari Park police box in Tokyo's Katsushika Ward. As the son of the wealthy Nakagawa Zaibatsu conglomerate, his lifestyle reflects significant resources. Despite his police duties, he frequently attends high-level corporate meetings, using exotic sports cars and private helicopters for transportation. His police uniform is a custom-made, high-end yellow pinstripe suit designed by Pierre Cardin. Nakagawa possesses exceptional driving skills and marksmanship proficiency. He maintains a sophisticated, detached demeanor, often appearing indifferent to female attention at work. His naivety about ordinary life contrasts sharply with his privileged upbringing. Nakagawa dislikes natto and favors driving his Ferrari. He serves as a comedic counterpart to Ryotsu Kankichi, balancing the latter's impulsive schemes with his own composed, affluent perspective. In the first Kochikame film, Nakagawa supports Ryotsu and FBI agent Lisa Hoshino in locating a terrorist targeting buildings owned by the Shinatora corporation. During the second film, set partially in Hawaii, he helps the Katsushika Police Force thwart a terrorist plot involving a UFO-shaped device designed to generate destructive tornadoes over Tokyo. His multilingual abilities and special operational licenses from police headquarters occasionally prove valuable in these scenarios. Nakagawa's character remains consistent across the franchise, with no significant long-term development or alterations to his core traits or background documented in the provided sources.