Satsuki lost her boyfriend, Hitoshi, in a car accident. Unable to face up to his death, she spends her days unable to sleep properly. At some point, Satsuki began to jog at dawn as part of her daily routine, and on a bridge she always passes, she meets a mysterious woman named Urara.
Satsuki's lover Hitoshi dies suddenly. She is unable to get over his death and is mired in deep sadness. Satsuki keeps thinking about the Moonlight Shadow phenomenon, which she heard about in the past. The Moonlight Shadow phenomenon is a mysterious event that allows a person to meet the dead at the end of a full moon.