During a peculiar winter break at Reien Girls' Academy, Azaka Kokutou, a student and aspiring mage, is tasked by her mentor to unravel the strange occurrences. Unbeknownst to Azaka, a rogue mage is using invisible fairies to steal memories from students. To aid her in this invisible threat, Shiki Ryougi, possessing unique sight, is also dispatched to the academy. Despite their clashing personalities fueled by romantic rivalry, Azaka must overcome her differences with Shiki as the fairy crisis intensifies and more secrets unfurl. Together, they must join forces to rescue their fellow classmates from a perilous fate.