Talk:Kakuja/@comment-213.66.199.45-20150214060755/@comment-173.51.123.20-20150214064434

Before I answer your post, you should remember that Tokyo Ghoul is a fictional world so applying real genetics in here won't work. Ishida can will anything according to his imagination.

Kakuja is a rare mutation triggered when they practices cannibalism. The "rare" word indicates that there are some chances that you won't have kakuja even if you commit it. Look at Yomo for an example, he did cannibalsm to become strong but he was shown to not have any half kakuja or full kakuja, he is just stronger than average ghouls in general.

About Yoshimura and Eto, she has slightly different kakuja state from her father but they are both ukaku type. She is also a half bread, meaning that she was born stronger and more susceptible for kakuja development and there was also hints of her commiting cannibalism for a long time ever since she was living in 24th ward. So saying that she inherited her father kakuja isn't exactly true.

About Touka and Ayato, the sister is more humane so I can't see her commiting such taboo to become stronger, for whom? She is not craving revenge and she just wants to live a normal human life without going insane like most kakuja. Ayato might commit cannibalism but he has grown to be calm and rational. They both have ukaku type so another Arata koukaku armor may not be the case.

Long story short, I don't think kakuja development is genetic since it will ruin the power level and the tragiccally beautiful story of kakuja.