Sei, a 20 year old office worker, is summoned to a different world after finishing some overtime work. But the person who had summoned her looks at her face and said, "This is not the Saint." Instead, the other summoned lady is lauded as the Saint, while Sei is ignored. Offended at being discarded without a second thought, Sei leaves the royal palace and looks for occupation, and she starts working at a laboratory where she makes potions and cosmetics. She uses her magic to grant people’s requests and slowly people begin suspecting that she is the actual Saint... Can Sei enjoy her slow dreamy different-world life without her saint title being found out?!

Aira Misono is a run-of-the-mill high school girl, and never imagined that she’d be summoned to another world, let alone declared its savior. Yet from the moment the handsome Prince Kyle lays eyes on her, he’s convinced that she’s the long-awaited Holy Saint destined to banish darkness from his world. Aira herself maintains significant doubts. Is she really up to this challenge? She might be able to use magic, but is she really a Saint? Aira’s fears and struggles only deepen when the woman summoned alongside her begins to look more and more like the one who truly deserves that title.