Sabu, a young Edo bakufu investigator, hails from an impoverished village where he grew up orphaned, shaping his resolve to defend the marginalized. Partnered with Ichi, a blind swordsman, he combats bandits, corrupt officials, and intricate criminal plots, wielding a jitte fastened to a long hemp rope to disarm foes. Answering to Saheiji, his bedridden detective superior, Sabu balances duty with personal ties as Midori, Saheiji’s daughter, is his betrothed. His past as a village outcast fuels his unwavering empathy and commitment to ethical justice, often plunging him into violent confrontations where Ichi’s martial prowess proves vital.

Across manga, anime, and live-action adaptations—including Fuji TV’s 1980s dramas and 2015 films—Sabu remains a steadfast figure bridging Edo-period authority and oppressed communities through procedural rigor. His design and narrative focus preserve traditional aesthetics, with later media reiterating his core role without deviating from established traits or backstory.