A kakuhou (赫包, kakuhō, approximately red wrap) is a sack-like organ that is only present in ghouls. The purpose of the kakuhou is to store Rc cells. The nutrition contained in the Rc cells are absorbed by the ghoul. These cells are transported to the kakuhou in the blood and stored inside. The Rc cells can be released from the kakuhou piercing the skin either consciously or due to excitement. These released cells form the kagune. The kakuhou of a ghoul is used to build quinques.