Hayou no Tsurugi: Shikkoku no Mashou

Laethreel, a young demon hunter, is given the task of saving the princess of Gandia from the grasp of a wicked noble demon named Aju. Along the way, she is joined by her unpredictable and blood-thirsty sword, Grenki, and a sweet-talking demon named Anshu, who says he is her ally. What Laethreel does not know is that on this mission she will face not only beasts but also the dark conflict of where she comes from.