Tsurugi no Nai
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!
(Source: Japanese Publisher, translated)