In this OVA, the story of Gau's history with his adopted sister and the secrets that make up the shadow skill unfold. The pair make their annual return to the gravesite of Gau's parents, where his growth and progress as a warrior can be exhibited for them. Gau has come along way in his training as a Sevalle under Elle's mentorship, but there are those who wish to find a way of eliminating them, just waiting for the right opportunity to mount a deadly attack. As the travellers make their journey, their family bonds and skill will be tested. Opponents are many, and battles are fierce, but Gau's training also entails taking on his sister in battle, and fully embracing the skills he must learn to defeat his ultimate opponent.
A l’âge de 10 ans, Gau Ban quitte son village suite à l’assassinat de ses parents. Il rencontre sur sa route, Elle Ragu, l’une des plus grandes combattantes du royaume de Karuda (elle appartient à la classe des combattants les plus estimés : les chevaliers Sevar). Elle décide de le recueillir et de l’entrainer au Shadow Skill, un art martial qui consiste à combattre avec ses jambes. En effet, Gau Ban souhaite devenir un chevalier comme Scarface, un combattant qui a réussi à devenir chevalier à l’âge de 16 ans et qui est connu pour être très fort. C’est ainsi que Gau s’entraine et voyage avec Elle et que tous deux rencontrent alliés et ennemis durant leur périple...
