The Fallen Idol ~ φ's vs. χ

is the fifteenth episode of Kamen Rider 555. This is the first of the three-part episode of the showdown between Faiz and Kaixa, along with the debut of Kaixa's Side Basshar.
==Synopsis==
Yuji and Takumi have been knocked unconscious and into the river. Takumi’s Faiz belt was knocked off of him. His friend picks it up. Takumi’s friends find Yuji and Yuji’s friends find Takumi. Each return to their own friends.
The attacks of the Lucky Clover continue.
During a fight with Orphenochs, Takumi realizes that Osada is one of them. Masato transforms into Kaixa to fight Osada, who is in her Orphenoch form. To everyone’s surprise, Takumi fights back to protect the Orphenoch.
==Plot==
Yuji and Takumi are defeated and thrown into the river. Itsuro tells Yuka that she is not a traitor to the Orphenoch and leaves. Keitaro and Masato search for Takumi, but find Yuji instead. Kaido and Yuka find Takumi. Keitaro finds the dropped Faiz belt. Yuka and Takumi are found by a group of bikers but Yuka kills them as the Crane Orphenoch as Takumi watches. Yuka runs off, finding Yuji. Later, Kaido is again attacked by Itsuro as Kaixa attacks Yuka. Faiz joins in by attacking Kaixa to protect Yuka, but he is defeated by Kaixa's new Side Basshar.
==Cast==
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===Guest Cast===
*Gangs: , , 
==Notes==
*As part of Super Hero Time, this episode aired alongside episode 12, .
*Viewership: 10.3%
==DVD releases==
Kamen Rider 555 Volume 4 features episodes 13-16: Friend of Foe?, Takumi's Spirit, The Fallen Idol ~ φ's vs. χ and Human Heart.
Blu-ray Box 1 comes with 17 episodes.
Category:Kamen Rider 555
Category:Episodes