However due to a history of consanguineous marriages, the family seemed to inherit a genetic defect that affects the way cannibalism changes their bodies. They became the focus of an Investigation by the Commission of Counter Ghoul under the code name Rose (ロゼ, Roze), after it is discovered that a survivor of the Rosewald family is among them. Their group is eventually exposed, as a result of Shiki Kijima kidnapping and torturing two employees from the manor staff. After being exposed, Tsuneyoshi Washuu authorizes an extermination operation which results in the family's destruction.