You watch Gau stand at his parents' grave and realize this isn't about proving he's strong enough, it's about proving he's worthy of the life Elle gave him. The fighting still breaks the landscape into rubble, but what matters is the quiet moment after, when he has to live with what he's done. This OVA knows that a warrior's real battle is the one with himself.

Every year, Gau Ban travels with his adopted sister Elle Lagu to his parents' grave, where he shows them how much he has grown as a warrior. Training as a Sevalle under Elle's instruction, he has made real progress, but enemies intent on wiping the pair out are biding their time for a chance to launch a deadly assault. On the road, the siblings face many opponents and hard fights that test both their abilities and their family ties. Gau's training even requires him to fight his own sister, and to fully master the techniques he will need against his greatest foe. The single-episode OVA blends fantasy adventure with family drama as the secrets of the shadow skill come to light.