Kusuda Yuni

Kusuda Yuni (also Kusuda Uni, born 19 October 1999) is a young boy involved in both the events at the shelter cabin and SPHIA. He is the only member of the cast who is simultaneously present at both locations. He represents the Jungian archetype of the Trickster.

Yuni is a precocious boy who appears in the first scene when he sits next to Fuyukawa Kokoro on the doomed HAL Flight 18. He becomes especially attached to Kokoro, who remains his closest friend throughout the story.

In spite (or perhaps because) of his obvious intelligence, Yuni's emotions and reactions appear to be in constant flux. Both Kokoro and Yukidoh Satoru begin to question if he really is an innocent victim of the bizarre events; behind the naive exterior is an enigmatic figure who appears to play a pivotal role in their experiences.