Purity Before Existence

In their eternal struggle against that which they perceive to be evil, the heavens, driven towards their own ideals, bestowed upon the Sacred Nyrheimian Kingdom a supernatural and magical power known as "the Energy of the Gods." They ordered the people of that kingdom to use that power to convert the rest of the world to their own religion, Jafnaorism, a religion centred around a set of ethical principles according to which a person possesses human rights only insofar as that they are a fully morally good person. The Nyrheimians were given a time period of twenty years to master the Energy of the Gods before declaring war on all those who would refuse to convert to Jafnaorism.

While the Nyrheimians prepare for their upcoming crusade, two seemingly ordinary schoolgirls from a faraway country also experience their own personal battles against evil in their day-to-day lives. However, by some unknown mechanism, they too develop the Energy of the Gods at the climax of their conflicts with their enemies. Guided by this power, as well as their own sense of justice, Shirosakura Hakutenshi and Arumariya Angeletta continue their fight against evil, which very quickly escalates to a scale far grander than the personal struggles they have encountered thus far.