Donten ni Warau Gaiden

In the Meiji Era of Japan, legend has it that the "Orochi"—an evil giant snake spirit—returns every 300 years to wreak havoc. "Yamainu," an elite fighting force, is assembled to subjugate the Orochi upon its reappearance. Presently, the squad has become involved with a secret government department conducting human experimentation using Orochi cells. This pits Yamainu leader Sousei Abeno against brothers Soramaru and Chuutarou Kumou, who stumble upon several dying escapees of the experiments. So...