A naïve 11 year old boy who Kokoro met on the plane. He is one of 4 people who managed to survive the plane crash.

The story follows Kokoro Fuyukawa and Satoru Yukidoh, who frequently experience a phenomenon that makes their minds switch place with each other, putting them in the other person's body. Kokoro is stuck in a blizzard in an emergency cabin on a mountain together with three other people, while Satoru is in an institute for the treatment of mentally ill criminals, having lost his memory. 

Yuni Kusuda