Ryo Saeba is a "sweeper" in Tokyo, performing various tasks such as resolving problems, removing vermin from the streets, and assisting those in need. He can also act as a bodyguard or assassin when necessary. Despite his skills, he struggles with controlling his hormones around women, which often leads him to behave foolishly. Fortunately, he has partners like Kaori Makimura who help keep him under control.
City Hunter was partially published in English by Gutsoon! Entertainment, who published the first five volumes from June 18, 2003 to April 28, 2004.