Act 15: The Imposter and Real Deal's Arrest

The Imposter and Real Deal's Arrest is the fifteenth episode of Samurai Sentai Shinkenger.

Plot
Frustrated with being unable to perform Shirahadori like Ryunosuke and Takeru, Chiaki goes off to train on his own. The Ayakashi Narisumashi appears close to where Chiaki is training, so Chiaki confronts him. Shinken Green makes short work of the Nanashi, but he is knocked out by Narisumashi and depowered. While the Shinkengers are battling the Nanashi, Narisumashi assumes Chiaki's appearance and taunts them. When Chiaki comes to, he finds his teammates angry with him, though Takeru thinks something is amiss. Narisumashi continues his plan of ostracizing Chiaki from the Shinkengers by pulling pranks on them using Chiaki's appearance, and, having done so successfully, assumes Kotoha's appearance to get close enough to kill Chiaki while his guard is down. However, Chiaki discovers the Ayakashi's deception, so he tricks Narisumashi into going after the other Shinkengers at Mt. Kurogane. When Narisumashi arrives at Mt. Kurogane, Chiaki exposes him. During one-on-one combat with Narisumashi, Shinken Green successfully disarms the Ayakashi, then joins Shinken Red in landing the deathblow with the Kabuto Five Rings Bullet. Tenku-Shinkenoh then destroys the resurrected Narisumashi. As they return home, the other Shinkengers apologize to Chiaki. Meanwhile, Dayu finds Juzo's body washed up on the shores of the Sanzu River.