Talk:Ghoul/@comment-27247962-20160407172349/@comment-10733658-20160408020853

What little we know is that ghouls have existed long enough for their origins to be lost to history. Touka discusses with Yoshimura how their origins are completely unknown, and she wanted to study that.

The clothing worn by the members of the Washuu Clan when the origins of the group are discussed seem to be from the Edo Period, which was during the 1600s - mid 1800s. However, Japan had closed itself off during that period, so ghouls have to have existed previously in order for them to be all over the world.