The Haibane Renmei (灰羽連盟 Charcoal Feather Federation) is a respected organization in Glie that both oversees the safety and comfort of haibane there and acts as a trade intermediary between the human population and the Toga.
Relationship with the Toga[]
Even humans are forbidden to interact with the Toga and thus it is up to the Haibane Renmei communicator to mediate trade. The profits from this pay for Old Home's (and possibly Abandoned Factory's) utilities and provide funding for the care of young feathers.