A Samurai waits patiently in Spain to complete his long-entrusted mission: protect the Key of Izanagi from evil. The key, composed of powerful pieces, closes a door that gives entry to the worlds threshold.
Gisaku is the story of a fight between good and evil, in which a group of very different characters will have to work together to stop Gorkan, Master of the Darkness, from accomplishing his objective: to invade the world with his demoniacal hordes. During their mission Riki, Gisaku, Yohei, Linceto and Moira will find themselves forced to overcome their internal conflicts and numerous difficulties.