The Traitorous Ren

is the twentieth episode of Kamen Rider Ryuki. It is the fourth of the nine-part arc of Kamen Rider Ouja.
==Synopsis==
Shinji questions Takeshi on why he enjoys killing people for his own satisfaction without thinking about others. In the real world, Shinji is surprised when Ren suddenly decides to help Takeshi evade being recaptured by the police. Meanwhile, Yui tries to uncover more secrets about her brother's experiments when she finds a film containing an image of the house she obtained from a research file. As Shinji battles against Takeshi once again in Mirror World, Ren suddenly appears and attacks Shinji.
==Plot==
to be added
==Cast==
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===Guest Cast===
*Police: , , 
*Girl: 
*Victim: 
==Advent Cards==
*Cards used:
**Ryuki:
***Sword Vent, Strike Vent
**Knight:
***Nasty Vent, Sword Vent
**Ouja:
***Sword Vent
*Weapons/Powers summoned:
**Ryuki:
***Dragsaber, Dragclaw
**Knight:
***Nasty Vent, Winglancer
**Ouja
***Veno Saber
*Advent Card appeared before episode's preview:
**Strike Vent
==Notes==
*Viewership: 7.2%
==Digital Releases==
*Kamen Rider Ryuki DVD Volume 5 features episodes 17-20.
*Kamen Rider Ryuki Blu-ray Volume 2 features episodes 18-34.http://www.toei-video.co.jp/special/ryuki
Ryuki DVD Vol 5.jpg|Kamen Rider Ryuki DVD Volume 5
91i67NXrcuL SL1465 .jpg|Kamen Rider Ryuki Blu-ray Volume 2
==References==
==See also==