Jubei Yagyu and Shitenno Tokugawa are fighting for death, Souro and his colleagues discover a facility related to the secret of Senhime's transformation in the basement of Edo Castle and struggle to save Senhime. Around the same time, Senhime's older brother, Yoshihiko Tokugawa, finally starts a secret plan because of his ambitions. In addition, a mysterious thug appears in front of Yukimura and Matabei who continue to act differently. Beautiful girl swashbuckler picture scroll, Volume 15 of Gale Rage!