最強の老賢者エデルファスは、人類の敵である厄災の獣と相討ちし天に召された。だがそこで厄災の獣が時を置いて復活する事を知り、8歳の少年ウィルとして転生。無双譚が今始まる!
The strongest old sage, Edelfas, was summoned to heaven in a battle with the beast of disaster, the enemy of mankind. However, when he learned that the beast of disaster would be resurrected after a while, he reincarnated as an 8-year-old boy Will. Musoutan is about to begin!