Qillatu (叶えし者 Kiratsu) is the designation given by the Dingir to those who has received their protection.
Z/X Encyclopedia Entry
The name given by the Dingir to human and Z/X who has obtained the protection of Dingir. "Hitu" that pledged with a Dingir becomes "Qillatu", and the Dingir becomes able to look at the tendency of that person.
The blessing and influence are given according to the scale of the desire, resulting in individual differences, and is broadly divided into 5 major stages. And then, the Depth may deteriorate when one receives emotional shock and the likes. The soul of those who reached the 5th stage is said to be burned.
The "Qillatu" doesn't have any suspicion to the Dingir. Almost no visible superficial changes.
The "Qillatu" becomes dependent to the Dingir. Mental darkness (illness) caused by the desire becomes apparent.
The "Qillatu" adores the Dingir. Their behavior and ideology changes. Their personality begin to crumble.
The "Qillatu" eliminates those who opposes the Dingir and those who hinder their desire.