This is a world where all witches were "hunted".

The "witches" who appeared several decades ago were the subject of "heresy" as a bad existence harming people. There is a young boy who had a doubts about such this common sense, Hayato Arai. witnesses the "Witch Stigma" suddenly appeared on the arm of his childhood friend to be a witch by chance. Hayato struggled to protect His dearly childhood friend from the church that continue hunt down of witches. However before He think a way to save her, A witch hunting unit of the red line church appears!