The Saint's Magic Power is Omnipotent

For generations, the kingdom of Slantania has endured a creeping miasma that breeds monsters and threatens its people. As the Order of Knights struggles to hold the line, the Grand Magus resorts to an ancient rite: summoning a prophesied “Saint” meant to purge the corruption and bring relief to the land.

Sei Takanashi, an overworked office worker, is abruptly pulled from her everyday life into Slantania—only to learn that the ritual called forth two candidates. When the prince recognizes the other young woman as the Saint, Sei is left without a clear role in the kingdom. Choosing her own path, she makes her way to the Medicinal Flora Research Institute to immerse herself in herbs and potion-making, where a meeting with the commander of the Third Order of Knights becomes a turning point as her unusual gifts begin to shape her new life.