Demons

Sinanima or "Demons", as they are known in the worlds above, are the personification of The Abyss. Once merely avatars with little distinction between themselves aside from their appearance, after eras in contact with the living worlds they've developed more unique personalities and even a similar societal system. Of course, the values of those above will matter little to the abyss.

Demons can be summoned through rituals writen down in grimoires and other ancient texts. The first texts mentioning the summoning of such beasts had no warnings attached and merely stated the wishes the summoner could be granted, like flies to the rot, those who took the risk of the unknown soon would learn the payment for their wish. It is believed that those rituals were first dropped by Sinanima, which would explain the lack of warnings, which started to be present in later texts.