TV-Series
Description
Kiyotaka Narumi is the older brother of the protagonist, Ayumu Narumi, and his existence is a shadow that looms over the entire story from the very beginning. He is a figure of immense, almost supernatural talent, having achieved what is described as world-class status in two entirely different fields. Before the age of ten, he had already become a world-renowned pianist. By the age of twenty, he had abandoned that path to become an equally peerless detective, gaining a reputation that made him legendary within law enforcement.
On the surface, Kiyotaka presents a persona that is bafflingly silly and eccentric. He is known to wear whimsical animal costumes, such as frogs, cats, and dogs, even to his job as a detective, and his behavior is often childish and seemingly dim-witted. This absurd exterior, however, is a deliberate mask that conceals a mind of terrifying sharpness and cunning. He is in truth a genius whose deductive abilities and strategic thinking are practically unrivalled, often solving cases with an almost impossible speed and accuracy that belies his clownish act.
This duality is at the core of his role in the narrative. To his younger brother Ayumu, Kiyotaka is the impossible standard. Ayumu is gifted in both logic and piano, but growing up in the constant shadow of a brother who excelled him in every way he measured himself has left Ayumu with a crippling inferiority complex and a sense of apathy towards his own abilities. Kiyotaka is the primary source of Ayumu's self-doubt, the perfect older brother whose accomplishments inadvertently torment the protagonist from afar.
The primary driver of the story's central mystery is Kiyotaka's sudden and unexplained disappearance. One year after marrying a fellow detective named Madoka, he vanished, leaving behind only a single cryptic message for his wife and brother: "I'm going to uncover the mystery of the 'Blade Children'". His disappearance and this last clue are the catalyst that pulls Ayumu and Madoka into the dangerous world of the Blade Children, a group of cursed individuals at the heart of a deadly conspiracy. For most of the series, his fate is unknown, with many characters, including his own brother, believing he is dead.
His key relationships are few but profoundly important. His bond with his wife, Madoka Narumi, is defined by his abandonment, leaving her to both mourn him and seek the truth about his vanishing. But his most significant relationship is with his brother, Ayumu. Kiyotaka's perfection has unintentionally shaped Ayumu's entire personality, creating a dynamic of rivalry and resentment against an opponent who is not even present. In the anime adaptation, Kiyotaka remains an enigmatic, absent figure, his face often partially obscured to maintain his mystery, and his ultimate fate and motives are never fully explained.
The manga provides a much more complete and surprising arc for his character. There, he is not merely a missing person but the true mastermind, or "puppeteer," orchestrating many of the events from behind the scenes. He is revealed to be the final antagonist of the story, having engineered a complex scenario designed to push Ayumu into absolute despair, including stripping him of all his support. The goal of this cruel test was to see if Ayumu could overcome hopelessness entirely on his own. When Ayumu succeeds, Kiyotaka finally returns, and it is implied he survives and reconciles with his family. In terms of abilities, Kiyotaka's most notable trait is his godlike deductive and strategic reasoning. He is described as possessing "unimaginable" detective skills and is capable of planning schemes that account for countless variables far in advance. Furthermore, in the manga, he is said to possess an almost supernatural level of luck, which passively protects him from death, making him functionally unable to commit suicide and fated to survive any lethal attempt unless by someone with equal or greater fortune. This combination of supreme intellect and improbable good fortune makes him an almost untouchable figure, an "inhuman" genius whose greatest desire becomes to orchestrate a challenge worthy of his own abilities.
On the surface, Kiyotaka presents a persona that is bafflingly silly and eccentric. He is known to wear whimsical animal costumes, such as frogs, cats, and dogs, even to his job as a detective, and his behavior is often childish and seemingly dim-witted. This absurd exterior, however, is a deliberate mask that conceals a mind of terrifying sharpness and cunning. He is in truth a genius whose deductive abilities and strategic thinking are practically unrivalled, often solving cases with an almost impossible speed and accuracy that belies his clownish act.
This duality is at the core of his role in the narrative. To his younger brother Ayumu, Kiyotaka is the impossible standard. Ayumu is gifted in both logic and piano, but growing up in the constant shadow of a brother who excelled him in every way he measured himself has left Ayumu with a crippling inferiority complex and a sense of apathy towards his own abilities. Kiyotaka is the primary source of Ayumu's self-doubt, the perfect older brother whose accomplishments inadvertently torment the protagonist from afar.
The primary driver of the story's central mystery is Kiyotaka's sudden and unexplained disappearance. One year after marrying a fellow detective named Madoka, he vanished, leaving behind only a single cryptic message for his wife and brother: "I'm going to uncover the mystery of the 'Blade Children'". His disappearance and this last clue are the catalyst that pulls Ayumu and Madoka into the dangerous world of the Blade Children, a group of cursed individuals at the heart of a deadly conspiracy. For most of the series, his fate is unknown, with many characters, including his own brother, believing he is dead.
His key relationships are few but profoundly important. His bond with his wife, Madoka Narumi, is defined by his abandonment, leaving her to both mourn him and seek the truth about his vanishing. But his most significant relationship is with his brother, Ayumu. Kiyotaka's perfection has unintentionally shaped Ayumu's entire personality, creating a dynamic of rivalry and resentment against an opponent who is not even present. In the anime adaptation, Kiyotaka remains an enigmatic, absent figure, his face often partially obscured to maintain his mystery, and his ultimate fate and motives are never fully explained.
The manga provides a much more complete and surprising arc for his character. There, he is not merely a missing person but the true mastermind, or "puppeteer," orchestrating many of the events from behind the scenes. He is revealed to be the final antagonist of the story, having engineered a complex scenario designed to push Ayumu into absolute despair, including stripping him of all his support. The goal of this cruel test was to see if Ayumu could overcome hopelessness entirely on his own. When Ayumu succeeds, Kiyotaka finally returns, and it is implied he survives and reconciles with his family. In terms of abilities, Kiyotaka's most notable trait is his godlike deductive and strategic reasoning. He is described as possessing "unimaginable" detective skills and is capable of planning schemes that account for countless variables far in advance. Furthermore, in the manga, he is said to possess an almost supernatural level of luck, which passively protects him from death, making him functionally unable to commit suicide and fated to survive any lethal attempt unless by someone with equal or greater fortune. This combination of supreme intellect and improbable good fortune makes him an almost untouchable figure, an "inhuman" genius whose greatest desire becomes to orchestrate a challenge worthy of his own abilities.