Ponkotsu Yuusha no Gekokujou

Crow, a soon-to-be graduate of the Royal Military Academy, is approached by Holly, the Sprite of the Holy Sword Excalibur, who informs him that the Demon King is about to return and that they must locate the Hero and deliver the sword to them. Assuming it will be an easy task with great reward, Crow agrees and sets out on the journey with Holly. However, their mission becomes complicated due to Holly's unpleasant personality and the unexpected discovery that the Hero is a slave girl. Crow must now figure out how to bring her back, as Holly suggests using the sword to attack her master.