Gau Ban-boy who is trying to become "Sevalle", the strongest warrior in the hired kingdom of Guruda. The older sister GAU, Elle Rag, is the 59th Sevalle and has the honorary title of "skill of shadows." The story unfolds around two brothers who fight with magical monsters and historical warriors. Most of them-battle called "Shadows Skills", which is carried out only with hands and legs. It begins when historical warriors sing the words "We are invincible!" and get superhuman forces. Note: Originally published in the four volumes of Takeshobo and Kadokawa, but was not completed until 1998 in the final serialization in Dragon Junior, which was released on Tankoubon in 1999, Kodansha like that 5 "Shadow Skill Phantom of Shade".