
Samanosuke then finds a laboratory and a genma scientist Guildenstern operating on a human. Samanosuke wakes up and enters a cave, where he finds the Raizan. As he lies unconscious, he is visited by the twelve Oni, who give Samanosuke the power to destroy the genma and absorb their souls with a mystical gauntlet. Samanosuke attempts to defend Yuki, but is sent flying against the wall. However, as the heroes have a brief reunion, a gigantic genma Osric emerges from the ground. Samanosuke soon finds some Genma creatures with an unconscious Princess Yuki. The game begins as Samanosuke and Kaede split up and head to the keep. The last scene shows an army of Oda soldiers marching on with a pale but living Nobunaga leading them on a horse. Samanosuke and Kaede arrive at the castle but they're too late to rescue Yuki. In the letter, Yuki says that maids and servants have been disappearing and she suspects monsters to be the culprit and also request that Samanosuke saves her from the castle before she ends up as one of the victims. Samanosuke receives a letter from his cousin Princess Yuki of the Saitō clan. As Oda clan's victory seems imminent, Nobunaga laughs until a stray arrow pierces his throat.

The story begins in 1560 with a cinematic sequence set during a Battle of Okehazama between the forces of Imagawa Yoshimoto and Nobunaga of the Oda clan, Samanosuke of the Akechi clan watches but is attacked by Yoshimoto's men.

Some sections are played with Samanosuke's assistant, Kaede, who has her own array of weapons and abilities, but is unable to absorb souls. As enemies are defeated, they release different coloured souls that are absorbed by using the demon's Oni Gauntlet on Samanosuke's wrist: red souls act as "currency" which can be used to upgrade weaponry, yellow souls recover health, while blue souls recover magic power which is used to perform each weapon's elemental abilities. However, as the player progresses, Samanosuke Akechi can gain three elemental weapons: Raizan, Enryuu and Shippuu, each with an elemental magic attack.

The player begins the game with a standard katana sword, and can also obtain long range weapons with limited supply.
