TV-Series
Description
Azuma Genkaku, also known as the Uber Monk or simply Red, serves as the leader of the Undertakers, a special enforcement squad within the prison. His history is rooted in tragedy, having been a novice at a Buddhist temple during his childhood. While there, he was subjected to relentless and severe abuse from other monks-in-training, including physical beatings and sexual assault. Despite this torment, he showed a capacity for gentleness, such as when he befriended and nursed an injured kitten. Following the catastrophic Great Tokyo Earthquake, he discovered the kitten had died. He then encountered one of his tormentors trapped in rubble, pleading for help. In a moment of profound psychological break, Genkaku murdered the monks who had abused him and constructed a shrine from their mutilated corpses, an act he described as having understood the salvation of the living. This event convinced him that the only way to be saved from a world of suffering is to be taken away from it.

In appearance, Genkaku is a young man in his mid-twenties with pale skin and long red hair, which was short before his incarceration. He wears the traditional garb of a Japanese monk, complete with a set of prayer beads that feature a skull pendant. His demeanor is deceptive; he initially presents a laid-back and irreverent attitude, but this quickly gives way to a brutal, impulsive, and excessively violent personality. He is blunt, sarcastic, and deeply sadistic, often displaying a psychotic grin when fighting or killing. He has a particular fondness for rock music, which heavily influences his combat style.

Genkaku's core motivation is a twisted form of salvation. He genuinely believes that life is nothing but pain and misery and that death is the only true path to peace. He views his violent acts as a form of mercy, "saving" people from the burdens of fear, oppression, and suffering. This philosophy extends to himself, as he does not fear death but rather welcomes it as the ultimate release. Within the story, he is a primary antagonist who leads the Undertakers in suppressing the Deadmen, the prisoners with the Branch of Sin ability. He plays a crucial role in maintaining the prison's brutal order and serves as a direct and terrifying obstacle for the protagonist, Ganta Igarashi, and the resistance group Scar Chain.

A key relationship in his development is with Nagi Kengamine, the Deadman known as the Owl. Two years before the series begins, Genkaku murdered Nagi's wife. This act triggered a rampage in which Nagi killed twenty-two of Genkaku's soldiers, an event that left Genkaku hiding in a locker, both terrified and perversely excited. From that day forward, Genkaku became obsessed with Nagi, viewing his raw, insane brutality as a form of enlightenment and desperately wanting to recruit him to the Undertakers' cause. This obsession drives many of his actions throughout the series.

Genkaku undergoes a clear development from a seemingly simple thug to a more tragic and complex villain. While he appears as a hyperactive and gleefully sadistic enforcer, his final confrontation reveals the profound loneliness, pain, and suicidal depression that fuel his madness. His fate is sealed in a battle against Ganta and a restored Nagi. Ganta's enhanced Branch of Sin attack, the Ganbare Gun, is fired at him. As Genkaku tries to flee, Nagi holds him in place, acting as his "guide to hell." Genkaku, in turn, smiles and calls Nagi his savior before being hit. Although he is not killed, he is left incapacitated and in a critical condition.

As a leader of the Undertakers, Genkaku himself is an ordinary human, but he is equipped with advanced technology to combat Deadmen. His primary tool is a guitar-shaped weapon that can function as a firearm, firing powerful bullets, or as a melee weapon. More importantly, he wears a Worm Eater, a device worn as a skull necklace that can nullify a Deadman's Branch of Sin, rendering their blood-based attacks harmless. This makes him a formidable foe, as most prisoners cannot use their special abilities against him. However, the Worm Eater can be destroyed by a sufficiently powerful attack, such as Ganta's supersonic Ganbare Gun, leaving him vulnerable.