So I'm a bit new to Malifaux lore but I absolutely love the neverborn as I have always been drawn to the more monstrous factions, but one thing that confuses me are the Oni, I haven't read much of the older lore, but what exactly is the origin of the Oni? If there is no definitive origin will the upcoming Ten Thunders book maybe have some lore (But probably not much, I place my bets on Kimon on explaining Onis fully) But I am still really curious about what they exactly are.
I thought that they were maybe somehow related to neverborn but saw no reference to them in the From Nightmares book which got me interested even more.