In a single fateful day, the labyrinthine city of Orario is transformed into a World of Water — submerged and changed beyond recognition. In this sunken city, Bell Cranel encounters a mysterious girl who calls him by an unfamiliar name — Fullland — before disappearing, leaving him holding a glowing blue sword. Bell recalls a heroic tale he once read, called Fullland of Water and Light, and suspects it holds the key to understanding what is happening. Following the trail of the tale's characters through the drowned city, Bell and his companions discover emotions and experiences that the story never captured — a tale beyond love, where heroes struggle and spirits dream. An original story from the mind of Fujino Omori.