Doni

"Doni"

- Someone awaits at the Ring of the Essence.

Doni is the person that turned into a Life-reverberating Stone for Lyza and was processed into her whistle at one point. Doni is currently accompanying Riko's squad, Hello Abyss.

Appearance
As a whistle, Doni's shape is similar to a common referee whistle. The whistle itself is decorated with the silhouettes of Eternal Fortunes, Glyphs that represents "Netherworld" or "Abyss", and other embellishments. On the whistle's sides, there is a round protrusion featuring a key-hole surrounded by patterns.

In their previous life, Doni appears to have worn attire consisting of a skull-like mask with three keyholes reminiscent of their whistle form, and also appears to have been equipped with devices reminiscent of side-flashlights.

Personality
Doni seemed to be reserved as they choose to stop engaging in further communication apart from what they want to convey when Faputa transmitted their message to the group.

Early Life
At an unknown point in time, Doni met Lyza and formed a bond with her. Their bond later allowed Doni to become a Life-reverberating stone for Lyza’s White Whistle. Lyza took them with her on her Last Dive and, for unknown reasons, gave Doni to Reg, alongside her notes. They were found by Ozen, with other belongings of Lyza, on a grave in the Garden of the Flowers of Resilience.

Orth Arc
When Hablog returned from his recent delving trip, he brought back Lyza’s whistle and belongings. Replicas of the whistle were mass produced and sold at the Resurrection Festival dedicated to Lyza. Riko was later offered Doni, by the Delver’s Guild, as she is Lyza’s only relative. She accepts. Riko brought the white whistle with her, on her descent into The Abyss with Reg.

Seeker Camp Arc
Riko briefly gave Lyza’s White Whistle to Ozen, in exchange for blue whistles to disguise herself and Reg. Ozen was seen lightly scratching and chipping Doni. When the duo departs for the 3rd Layer, Ozen gives Doni back to Riko.

Poison and Soul Liberation Arc
Riko held onto her mother’s White Whistle while suffering from the 3rd Layer & 4th Layer Curses, Orb Piercer venom, and Reg's botched amputation of her arm. Nanachi was reminded of Bondrewd when they saw Lyza’s White Whistle.

Ido Front Arc
Riko investigates Lyza’s whistle while Bondrewd explains how Life-reverberating Stones are made, upon realizing Doni's existence.

Capital of the Unreturned
Riko asked Faputa if she could communicate with Lyza's whistle, similar to as she did with Prushka, upon which Doni transmitted their name to them and the message that someone is waiting for Reg at the Ring of the Essence.