In a certain country in a certain era live the descendants of the Hero--one of whom harbors the ability to unsheathe the Holysword and become the Chosen Hero. One day a mysterious girl with a sword stuck in her head appears before the black sheep of the descendants, Quiche. Is this chance encounter the start of a new legend!? It's a light-hearted adventure between a Holysword girl and a Drop-out Hero!

Manga artist Yuri prays at a shrine to become a serialized author. What she gets is Lily Maria, a goddess who comes to Earth seeking a different kind of "yuri".