AU. Uruki/Takiko. The Genbu seishi live in 1653 Japan during the Tokugawa shogunate. Stirrings of revolt and betrayal reach Edo, and Uruki is sent to investigate. Journeying north to Morioka, he finds a hardened seventeen-year-old girl who talks with the blade of a naginata. What she has to say could change Japan – and him – forever.