Maria

The main character. A very powerful witch that hates conflicts, because of this she interferes with any violence including battles, by summoning mystical creatures that are really big. Although the heavens take notice of Maria's actions and the Archangel (and Saint) Michael comes down making a decree that if Maria loses her virginity she will also lose her powers. Ezekiel, an angel dispatched by Michael, is left to keep an eye on Maria, making sure she doesn't tip the "scales". (Source: Junketsu no Maria Wikia)