Synopsis
This OVA explores Gau's past with his adopted sister and the mysteries behind the shadow skill. Every year, the two return to the graves of Gau's parents, where he demonstrates his development and prowess as a warrior. Under Elle's guidance, Gau has made considerable progress in his training as a Sevalle, but enemies are plotting their demise, waiting for the perfect moment to strike. During their travels, their familial bond and combat abilities are put to the test. Numerous foes appear, and battles are intense, yet Gau's training also requires him to fight his sister and fully master the techniques needed to conquer his ultimate adversary.