Talk:Shuu Tsukiyama/@comment-10733658-20150620125410

So apparently this is the opening scene with Kanae and Papa Tsukiyama:

Kanae: Mirumo sama. Shuu sama will eat anything, whether its human or ghoul. And it seems like he cant control his kagune Mirumo: Shuu kun.. this is the result of the repetitive consanguineous marriages us Tsukiyama had. It controls our RC cells Mirumo: (it would be good if he could get used to be a Kakuja) Mirumo: But it is impossible for us based on our family history Mirumo: (if you continue to cannibalize, you will-)

So it sounds like the Tsukiyamas have some genetic issues as a result of inbreeding.