Talk:Holou/@comment-180.183.97.4-20181016090808/@comment-2600:1700:FF20:E350:CCED:CC53:1675:DAAB-20181129072153

I'm fairly certain it is actual said in volume 6, as more of a side-note really. Volume 6 has quite a bit to tell about the Ex-Machina, and one detail it gives is that Horou created them. I no longer have the book on-hand though, so I don't know which page it was on. Hope this helped anyway though!