A ruthless ronin who murders a samurai to marry his daughter. He later plots to poison his wife to marry into nobility, leading to her death and vengeful hauntings. Driven mad by guilt, he kills his new wife and her parents before being slain by avengers at a temple.
Yomoshichi is a planned victim of Iemon's conspiracy to clear the path for Naosuke.
Iemon is the murderer of Sode's family and fiancé, making them lifelong enemies.
Iemon hires Takuetsu as an agent to facilitate Iwa's murder, later killing him when the plan fails.
A criminal alliance formed to cover up murder and advance Iemon's social status.
Iemon marries Iwa after framing her father's murder, later betraying and poisoning her.
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