A magic system built on eating miso soup is deliberately absurd, and the show commits to that premise without winking. The OVA treats a ridiculous concept with the same earnest worldbuilding energy a serious fantasy would use for ancient prophecies. It knows exactly what it is: a single episode that exists to be weird and memorable, nothing more.

Magic has been known for a century as a mysterious power that rivals science. The discovery of MISO, short for Material of an Impediment to the Sorcerer's Orders, changed magic from a special power into a technique that can be trained and developed. One morning, Shouta Hacchouya, a high school boy who attends a magic academy, is tasting miso soup when Artemisia, a princess of Majieeru, the birthplace of magic, crashes through the window of his apartment. She appears to be pursued by a powerful enemy, and she takes the startled Shouta along with her. The single OVA episode mixes fantasy with ecchi content.