Talk:Rize Kamishiro/@comment-27345913-20161112194737/@comment-76.5.87.165-20161113204723

Human/ghoul offspring aren't all that rare - we've got at least five examples in Arima, Furuta, and the Zero Squad kids. The rare ones are the ghoul-dominant children, like Eto.

A human mother has difficulty carrying a ghoul fetus to term, as her natural diet (read: not humans) is opposed to the fetus's needs. Said human mother can eat human flesh and carry the child to term, as Eto's mother did. Ghoul mothers, however, cannot bear human fetuses, as their bodies naturally react to the human fetus as food and devour it. As the Washuus are ghouls, they're more than capable of having offspring with other ghouls like Rize. So, the Washuus keep branches for breeding purposes - human mothers, possibly forced to eat human flesh to sustain the half-human children forced into their wombs which result in Arimas, Furutas, and Zero Squad members, and ghoul mothers, who continue the full-blooded ghoul Washuu line, which result in Matsuri and the other Washuus who are acknowledged as such.