Heizou Hasegawa, known as the "Devil," wields his blade to defend the peace of Edo. As the chief officer responsible for maintaining law and order while preventing crime and arson, he serves as the region's foremost protector. During the Tenmei period at its peak in 1783, Hasegawa held the position of chief director in the department overseeing local security. Both revered and feared as Devil Heizou, he was dedicated to eliminating the most heinous criminals and thieves of his time.