Ukuna

Ukuna was the former Earth Witch, who fought alongside Elcrest one thousand years prior to the main events of the story.

Prior to Main Events
A thousand years prior to the events of the main story, Ukuna became the Earth Witch at some point during the period of the second Eclipse. She was met by Elcrest and was tuned by the Conductor, becoming his ally. Accompanying Elcrest with the four other witches, the Forgotten King Xeno, and Technolomy Veronica, the group would battle the Angels and ascend to the Moon in order to stop the Eclipse by defeating God. On that fateful day when the group would ascend the Yggdrasil and reach the Moon, Ukuna would witness God, in reality the Mother Qualia, afflict Elcrest with a severe strain of negative energies. Xeno sacrifices himself to save Elcrest and, despite their reluctance in leaving him behind, the group is warped to safety by Hilda.

As the afflicted Elcrest suffered and begged his companions to kill him, Ukuna was urged by Kaede to help the Conductor, but the Witch expressed her doubts in being able to do anything. When Francisca proposed she put him into a deep slumber within the waters as means of purification, the other Witches would agree with her plan and go their separate ways.

In the aftermath of the Eclipse, Ukuna held onto the Earth Score, her part of the Celestial Hymn. Long after she passed away, her spirit would reside within the Earth Qualia, waiting for the revival of Elcrest before revealing herself to the succeeding Earth Witch.

Chapter 10 - The Celestial Hymn
Ukuna appears in Hilda's flashback, as she shows Alto the events that transpired a thousand years prior during the second Eclipse.

Her shadow also appears in Alto's spirit world along with the other past Witches, where she expresses her desire in running away and hiding from Mother Qualia.

When the Tuning Knights search for the dispersed scores of The Celestial Hymn, they mount a search in the vast Mujabalaar desert. The group encounter Mordimort's shadow, a personification of her painful memories of Kashmistan, which she left behind when she chose to go to Lambert. Accepting her shadow's grief of the tragedy, Mordimort's Qualia resonates with her coming to terms with the past. Ukuna appears before Mordimort in a vision, along with Niki, her spirit having resided in the Earth Qualia and being unable to communicate with her successor due to the powerful presence of her shadow. After the sisters' brief reunion, Mordimort requests the Earth Score of Ukuna, who complies and bestows the score to her descendant.