TV-Series
Description
Kagami, whose full name is Keisuke Kagami, is a supporting character in the series who begins as an investigator for the Shinjuku Police Department. He is a 26-year-old man with blonde hair and blue eyes, a look that stands out in the series, and he typically wears a black suit with a tartan blue tie.

In his professional role, Kagami is described as having a strong sense of justice and a diligent, serious personality. He is an elite superintendent in the First Investigation Division, committed to upholding the law and maintaining order. This dedication is deeply personal, as he lives with his younger sister, Tokiko Kagami, whom he loves dearly. His hobbies include kendo and exercise, reflecting a disciplined nature, while he is noted to be not good at housework.

Kagami’s core motivation and central role in the story are defined by his transformation into the vigilante known as Twenty Faces. The catalyst for this change is his growing frustration with a legal system that he believes fails to deliver true justice. He repeatedly witnesses violent criminals evade meaningful punishment by using an insanity defense, being released from psychiatric custody only to continue their crimes. This anger and sense of helplessness reach a breaking point when one of these criminals, a remorseless killer, murders his sister. Consumed by grief and rage, Kagami abandons the system he once served and takes justice into his own hands, executing the criminals who slipped through the law's grasp and adopting the name Twenty Faces to carry out his vengeance.

His role in the narrative shifts from a representative of legitimate authority to an antagonist whose actions challenge the very foundation of that authority. Even after his arrest, Kagami suggests that the idea of Twenty Faces has become a concept that will not die with him, implying that other disillusioned individuals may continue his work. His key relationship is with the young detective Akechi, who serves as his foil. Where Kagami gives in to darkness and extrajudicial punishment, Akechi works within the system, even if begrudgingly, and warns Kagami not to let the darkness consume him. Kagami's personal tragedy is a major development point for the series, transforming him from a supporting policeman into a figure central to its themes of justice versus the law. His notable abilities, beyond his former skills as a detective and his training in kendo, lie in his transformation into a decisive and methodical vigilante.
Cast