Ilim

Ilim receives little individual characterization before arriving at Ido Front. They travel among the children recruited by Bondrewd and share the group's initial excitement and uncertainty about entering the Abyss.

Canon does not establish enough about Ilim's personal history, preferences or relationships to support a more detailed personality profile.

Ilim is an ordinary human child and is not shown possessing specialized delving abilities or supernatural powers.

Their presence among Bondrewd's recruits places them in circumstances far beyond those an inexperienced child could reasonably survive independently.

Ilim appears in the flashback explaining how Nanachi and Mitty came to Ido Front. Bondrewd gathers children who have few social connections and transports them deep into the Abyss for his experiments.

Ilim is subsequently subjected to Bondrewd's research and transformed by the Curse. A Hollow resembling Ilim is later seen among the creatures associated with Ido Front.

Claims that Ilim later appears as a particular inhabitant of Iruburu are not explicitly confirmed by canon and should not be treated as established identity.

Bondrewd brings Ilim and the other children into the Abyss as subjects for his research.

Nanachi travels in the same group of children brought to Ido Front.

Mitty is another child in the group and becomes Nanachi's closest companion during the journey.