|Japanese Name||和修 常吉 （わしゅう つねよし）|
|Relatives||Yoshiu Washuu (Father) †|
Yoshitoki Washuu (Son) †
Kishou Arima (Son) †
Kichimura Washuu (Son)
Rize Kamishiro (Daughter)
Matsuri Washuu (Grandson)
Iyo Washuu (Granddaughter-in-law)
Numerous illegitimate children
|Manga Debut||Chapter 82|
|Anime Debut||Episode 20|
For his famed strength, he was known as Demon Tsune (鬼常, Oni tsune).
Tsuneyoshi was a senior man with long white hair and a beard.
Because of his seriousness and powerful insight, the air around him was always heavy. He disliked nonsense as he was shown putting his interest in the outcome rather than a rhetorical excuse. Despite his stern disposition, he was a pragmatist inducting Juuzou Suzuya and Ken Kaneki as ghoul investigators despite the former's psychological instability and the latter's cannibalistic species at their sponsor's request.
Raid of Kanou's Lab Edit
Tsuneyoshi summoned Itsuki Marude to hear the actual conditions of Aogiri Tree but then asked him to leave since there was no news. He also asked him to hurry, fearing the increase of victim numbers. He was also mentioned to have appointed Kishou Arima and Juuzou Suzuya as ghoul investigators, recognizing their potential.
Post-Owl Suppression Operation Edit
As his son and Kishou Arima appeared before him, they discussed the results of the Owl Suppression Operation in the 20th ward. Tsuneyoshi was seen holding a piece of paper with Kaneki's profile crossed out and marked as "Erased." He spoke to Arima informing him the "ownership rights" were his and asked him what he would do about the name. Arima replied that he would entrust it to "him" addressing to a particular someone.
Rose Extermination Edit
In Tokyo Ghoul:re, he informed Special Class Koori Ui about his exchange with various vice-presidents of the companies under the Tsukiyama Group. He asked the Special Class to run a Rc examination for everyone in the Tsukiyama parent company and its affiliates, suspecting other ghouls to be hiding within the company. With that, the Chairman authorized Koori Ui to lead the Tsukiyama Family Extermination Operation.
Third Cochlea Raid Edit
In his teen years, Arima was admitted as a Rank 3 Ghoul Investigator on the Chairman's orders. He trusted Arima and placed him in high regard. He was confident in Arima's abilities as evidenced by the fact that he summoned him along with his son to discuss the situation regarding Ken Kaneki. He was also the only one to address him by his first name, "Kishou," rather than "Arima," fitting since Arima was his son, and the only one of his other children he interacted with besides Yoshitoki.
In contrast to Arima, he did not recognize Souta as his kin as noted by Eto Yoshimura. Furuta stated to Uta that his father could not even recognize him. Furuta did not have any hesitation in killing his father and other relatives (except Matsuri) to usurp control of the Washuu Clan.
As a member of the CCG he apparently considered her a notorious Ghoul offender due to her voracious appetite but in reality she was a breeding slave for the branch family of Washuu Clan which indicates he perceives her as a tool for maintaining the clan's pure bloodline.