A long time ago, there was a large nation governed by a kingdom of rice people (a strange species that look like large anthropomorphic rice grains) known for growing bountiful rice of extremely high quality. Then, the humans' greed for the kingdom's rice harvest forced the rice people to magically transform their nation into a gigantic floating island, drifting high above the earth. Eons passed, and tales of the rice kingdom eventually faded into nothing more than a mere legend to humans.
During those times, the rice kingdom fell into a dispute over which rice dish was better and became divided into three factions: Onigirazu, Taco Rice, and Omurice. Continued conflict left the kingdom with no choice but to split the floating nation into 3 separate islands with the help of the same magecraft used to escape the hands of humans.
Each governed by its own kingdom, the three islands soon drifted far apart from each other. What happened to two of the kingdoms remains a mystery so far, but the story I'm about to tell begins with the Omurice Kingdom, the domain of the one named Milky Queen.