Kuroford (黒四駑) is Shizuru's spiritual beast, the second strongest after Byakuei. Kuroford was originally sealed within an iron knife, but Shizuru drew him out. He utilises lighting-based attacks. After Shizuru lost her Sesshoseki to her older sister, Setsuna, she could not unleash Kuroford. However, her willpower finally drew him out when attacked by the Juugondo in the haunted house.