The story takes place in warrior kingdom where a deadly martial art called Shadow Skill is practiced to defend the continued existence of the kingdom. Dreaming of becoming an invincible warrior one day, like the legendary warrior named Scar Face who has defeated 2,000 opponents, the boy named Cau Ban trains hard with his older adopted sister Elle who has mastered Shadow Skill. A deadly combat breaks out when a rouge pack of intruders suddenly assaults the castle to steal a box that contains a secret... (Source: ANN)

In the land of Kuruda, warriors with magical powers and incredible fighting skills battle for the ultimate prize: the title of Sevaar, the strongest warrior in the land. Elle Ragu, nicknamed Shadow Skill, is the newest Sevaar to emerge, but that doesn't make her life any easier. Teaching her little brother, Gau, how to be a warrior, fending off assassins from other kingdoms and thwarting enemy invasions is hard enough, but her biggest challenge will be paying off her drinking debts. (Source: ANN)

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.

After being defeated by the leader of the Beimu clan, Mount Xuandu's chief disciple Shen Qiao falls off a cliff and nearly dies from his injuries. Unfortunately, the ruthless Cleansing Moon sect leader Yan Wushi, known for his cunning and skills, chances upon him and comes up with a sinister plan: turn the benevolent disciple into a vengeful cultivator who could one day become a worthy rival. Shen Qiao is thrown headfirst into a world of betrayal and deception, contrasting with his once-strong beliefs that good could exist in everyone. As he encounters further hardships that push him to his wits' end, Shen Qiao is faced with the decision of continuing to uphold his kind nature—despite the cruel reality he has been shown—or giving in to the deceitful scheme of the spiteful Yan Wushi.