"Crying Freeman" centers on Yo Hinomura, a skilled potter living a quiet life in Japan, who becomes entangled with a powerful Chinese crime syndicate known as the 108 Dragons. After being forcibly recruited and brainwashed by the organization, Yo is transformed into their top assassin, codenamed "Freeman." His nickname stems from the tears he sheds after each kill, a haunting reminder of his suppressed humanity. Despite his brutal role, Yo retains a sense of morality, struggling to reconcile his actions with his true self.

The narrative takes a dramatic turn when Yo encounters Emu Hino, a Japanese woman who witnesses one of his assassinations. Instead of eliminating her, Yo spares Emu, sparking a complex and passionate relationship between them. Emu becomes a pivotal figure in Yo's life, offering him a glimpse of redemption and a chance to reclaim his identity. Their bond deepens as they navigate the dangerous world of the 108 Dragons, facing betrayal, rival factions, and internal power struggles within the syndicate.

The series explores themes of identity, loyalty, and the duality of human nature, as Yo grapples with his dual existence as both a gentle artist and a ruthless killer. The 108 Dragons, led by the enigmatic Madame Lin, serve as a constant threat, manipulating Yo and testing his resolve. As the story progresses, Yo's quest for freedom becomes increasingly intertwined with his desire to protect Emu and break free from the syndicate's control.

The plot is driven by intense action sequences, emotional confrontations, and a richly layered underworld of crime and intrigue. Supporting characters, such as the loyal enforcer Ryuji Hanada and the cunning assassin Bai Lan, add depth to the narrative, highlighting the complexities of loyalty and survival within the criminal hierarchy. The series culminates in a high-stakes confrontation as Yo confronts the forces that have shaped his life, seeking to reclaim his autonomy and forge a new path alongside Emu.