Board Thread:General Discussion/@comment-25669979-20170501045502/@comment-25942629-20170512220631

I renamed his page with a redirect, so he will now be identified as "Shigama Doji" but searching "first progenitor" will lead to his page, too.

I don't know Kanji, unfortunately. However, the meaning of the name should be published in the manga volume introducing him. That's where Shikama Doji and the other demons had their names translated.

I just started a new thread for theory discussion: http://owarinoseraph.wikia.com/wiki/Thread:16609