Kuroford

Kuroford (黒四駑, Kurofōdo) is Shizuru's spirit 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 Setsuna, she could not unleash Kuroford. However, her willpower finally drew him out when attacked by the Juugondo in the haunted house.