Toshiyoshi Kawaji, Chief Superintendent of the Edo police force during the Meiji Restoration, recruits the skilled swordsman Shizuma Origasa into the police after witnessing Shizuma confront a samurai rebel targeting official Iwakura Tomomi. A principled and strict figure loyal to the Meiji government, Kawaji pragmatically integrates valuable former adversaries into the force to maintain order.
Historically recognized as the "Father of the Japanese Police," he studied Western policing on the Iwakura Mission and established Japan's modern police system, implementing a centralized French-influenced structure that transitioned patrolmen from *rasotsu* to *keisatsu*. His philosophy, detailed in *Keisatsu Shugan* ("Hands and Eyes of the Police"), positions law enforcement as a preventive force complementary to the military, analogizing the government as a parent, the people as children, and the police as the nursemaid safeguarding public safety while respecting individual rights.
Kawaji advocates for incorporating traditional swordsmanship into police training for its practical and disciplinary benefits. Following the 1876 sword ban and Satsuma Rebellion, he forms the Battotai (Drawn Sword Corps) and authors *Gekiken Saikō-ron* ("Revitalizing Swordsmanship") and *Kendo Saikō-ron* ("Revitalizing Kendo"). These works argue kenjutsu cultivates bravery, health, and effective crime suppression, leading to standardized kata practices foundational to modern kendo. His leadership emphasizes rigorous discipline, reportedly sleeping only four hours daily under the motto "no sleep, no rest."
Kawaji maintains a close professional relationship with Minister of the Interior Ōkubo Toshimichi. He is deeply affected by Ōkubo’s assassination and expresses frustration that political maneuvering prevents justice against the true culprits.