Tachibana Ginchiyo was the daughter of Tachibana Dōsetsu, a powerful samurai known as "Lightning God" She was a severe and rigid figure, a valiant woman, with remarkable communication skills. Ginchiyo inherited the role as steward of the castle, its fixtures, and the territory. Ginchiyo was interested in military matters. She notably inherited her father’s sword Raikiri (”Lightning Cutter”). Her elite guard was entirely composed of women and she made sure that every woman working in the castle could take part in its defense. Such measures prevented eventual attacks on her domain.