The description of Battle Assassin shadow
In the land of Lord Gohda, peace has not been fully restored and rumors of betrayal have been swirling around the lord and his subjects.
As a result, Lord calls upon the Azuma Ninja, Riki(assassin shadow) and Ayame, to investigate.
maru 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 kingdom.
Unfortunately, the fortune-teller turns out to be an imposter and kidnaps Princess Kiku, Lord Gohda's daughter.
Ayame chases after her without hesitation, while Maru(the shadow) 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.
Gohda then decides to declare war on Tado and travels to his land with Riki.
After he( shadow assassin) succeeds in taking Daimyo Tado's life, the woman who posed as the fortune-teller, a Kunoichi named Rinshi, appears and tries to kill Rikimaru, but fails thanks to the intervention of Tachibana Hyakubei, who was hired by Gohda.
After Lord Gohda's order, he(assassin shadow) heads back to the castle.
When he arrives however, he is attacked by the guards, who were ordered to consider him a traitor by Sekiya. who was actually Rinshi in disguise. Ayame and Kiku then flee the castle as the real Rikimaru arrives, and the two women head for a secret hideout suggested by Sekiya.
The Princess then reveals to be Rinshi in disguise and wounds Ayame, but Rikimaru arrives just in time to save her and kills Rinshi.
Gohda, noticing his castle in flames, realizes that it was all Sekiya's doing and orders he to get back there and eliminate him.
After he seemingly takes Sekiya's life and saves Kiku, Sekiya rises again and reveals himself to be Onikage, who then challenges he to a duel.
Rikimaru assassin ultimately gains the upper hand but Onikage uses the princess as a shield, forcing shadow Rikimaru to drive his sword through her to get to Onikage and kill him. Ayame, who had followed Rikimaru, cries upon Kiku's death.