Akado Suzunosuke tells the story of Suzunosuke Akado, a young boy who aspires to become the best swordsman in Japan. He joins the Chiba Dōjō, run by Shūsaku Chiba, a renowned Hokushin Ittō-ryū in Edo, where he spends his days training and trying to perfect the Akado Vacuum Slash, a special technique left by his father. Suzunosuke faces a variety of events, including a feud and reconciliation with senior disciple Rainoshin Tatsumaki, and a confrontation with the Kimento, which is plotting to overthrow the Edo Shogunate. However, Suzunosuke is undaunted by any hardships he faces, and he continues to follow his own path.