Kagami is a significant spiritual entity encountered by the protagonist journeying through the Dark Wasteland, an afterlife realm where deceased spirits linger. She traverses this desolate landscape as a female soul seeking rebirth within the Celestial Realm.

During the protagonist's unconscious state, spiritually adrift in the Dark Wasteland, a definitive encounter occurs. They connect through a shared musical motif, each playing an identical melody on their respective flutes. This non-verbal exchange establishes a profound bond before the protagonist awakens in the physical world.

Driven by this ethereal meeting, the awakened protagonist seeks her physical counterpart, confirming her existence beyond the spiritual plane. Her physical form possesses striking beauty, described as "very pretty." This beauty garners the romantic attention of a prince, who subsequently keeps her under close guard.