Talk:Kakuja/@comment-2601:344:4100:4388:19D3:1CE8:3174:102-20180307232722/@comment-10733658-20180307233421

Considering the two prominent Ghoul families in the series, genetics seem to be involved. The Washuus are "natural-born Kakuja" due to centuries of cannibalism, while the Tsukiyamas are incapable of becoming Kakuja because of a genetic abnormality.