In the current era, a peculiar phenomenon occurs where few newborns are exchanged with infants from an alternate world, possessing physical traits of mythical beings such as dwarves, oni, and harpies. Alas, they lack the supernatural prowess of their legendary predecessors. Kazamori, our protagonist, grows up as an elf girl subjected to societal pressure in hopes of manifesting magical abilities. Despite struggling to maintain her "mage" persona during high school, a regular human with aptitude for scientific magic ultimately uncovers her secret.