Ninja Assassin Shadow

In the land of Lord Gohda, peace has not been fully restored and rumors of betrayal have been whispering throughout the country of Gohda.
As a result, he calls upon the Azuma Ninja, Rikimaru and Ayame, to investigate. Rikimaru soon discovers that someone is planning to start a war.
Meanwhile, Counselor Sekiya, Gohda's right hand man, arranges for a fortune-teller to predict the future of Gohda's domain.
Unfortunately, the fortune-teller turns out to be an impostor and kidnaps Princess Kiku, Lord Gohda's daughter.
Ayame chases after her without hesitation, while Rikimaru goes on another mission for lord Gohda instead: resume the investigation on the nuisances that have been troubling the land.
He then discovers that Daimyo Tado is the one behind all this. Ninja Assassin Shadow then decides to declare war on the country of Tado, and travels to his land with Rikimaru.
Lord Gohda upon arriving onto the soil of the country Tado, gave Rikimaru the mission of assassinating Daimyo Tado.
After Rikimaru succeeds in infiltrating his war camp and assassinating Daimyo Tado's, the woman who posed as the fortune-teller, a Shida Kunoichi named Rinshi,
appears and tries to kill Rikimaru in battle, but fails thanks to the intervention of Tachibana Hyakubei, who was hired by Gohda.
When he arrives however, he is attacked at the entrance gate by the guard who was ordered to consider him a traitor by sire Sekiya.
Ayame had actually succeeded in rescuing the princess but had briefly fought who appeared to be Rikimaru, but was actually Rinshi in disguise.
She then flees the castle in full disguise and takes her to a hideout. The Princess then reveals to be Rinshi in disguise and wounds Ayame,
but Rikimaru arrives just in time to save her, and kill Rinshi in heated combat. Gohda, noticing his castle in flames, realizes that it was all Sekiya's doing,
and orders Rikimaru to get back there and assassinate him. After he seemingly takes Sekiya's life and saves Kiku, Sekiya rises again and reveals himself to be Onikage,
who reveals it was he who orchestrated the events then challenges Rikimaru to a final duel.
Rikimaru ultimately with master sword skill gains the upper hand but Onikage uses the princess as a shield,
forcing Rikimaru to drive his sword through her to get to Onikage and kill him.
Ayame, who had followed Rikimaru, cries upon Kiku's death.
The extended ending (attained by collecting all pieces of map in normal mode) shows Ayame speaking in Onikage's voice, appearing that she was possessed by Onikage,
with his voice in the background of her voice, when she says "Rikimaru".
Reasoning that the only reason of Rikimaru stabbing Kiku was to lower Ayame's self-esteem then make his move to possess her.

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