In essence, Maria is a witch who lives during the Hundred Years War between England and France. She hates war and uses all her powers to stop it from harming the village she protects. However, the villagers may not appreciate her actions, and Heaven might take notice of her interference in human affairs. Despite this, there's a humorous aspect to the story with some historical elements included.
Junketsu no Maria was published in English as Maria The Virgin Witch by Kodansha Comics USA from February 24, 2015 to June 30, 2015.