In his skyless cavern of a village Simon toils daily, drilling holes to expand his stifling little world until one day he makes an extraordinary... more>> discovery: a small glowing drill-bit and the man-sized mech it activates. Before he can give it a second thought Simon's dragged into a plot to break through to the surface by the local gang leader Kamina, only to have the ceiling come crashing down on top of them under the weight of a giant monster! It somehow falls onto the boisterous Kamina and cowardly Simon to defend their village, but once they defeat the monster what awaits the duo on the surface world? Get ready for buxom babes, beastmen, and giant mechs as only GAINAX can provide them! <<less

Once there was a legend of a sword. It is said that the sword of a rune god was sealed up in "Jagara-Mogara". When the spirits of Light, Water, and Earth come together, the seal will break, then the sword will be immortalised. That is the sword of Susanoh.... more>>

Izumo, Kumaso, and Oguna, upon pursuing the sword of Susanoh, came to the nation of Jagara ruled by an Empress and her army of women. They got involved in the wars between Jagara and Amamikado, but what awaits them isn't the clash between two nations, but the darkness involved with the sword of Susanoh that everyone is seeking. <<less

Once there was a military power called "Amamikado" which invaded other countries and expanded its domain. ... more>>

There were two princes in Amamikado.

The younger prince was named Oguna. His father, the Emperor of Amamikado, trained him as an assassin. Oguna was hungry for power to help his father. This is a tale of an assassin before he meets Izumo. <<less