|This article is about a/an rider in Kamen Rider Decade.|
Raia is a Rider who uses the power of his Contract Monster Evildiver.
- Like other A.R. Ryuki Riders that appeared in Kamen Rider Decade, either his real identity or his full name never be revealed by Toei, but he only appeared in suit and voice.
- It can be assumed that his first name is either Miyuki or Yuichi, since most of the A.R. World Riders share their first names with their original counterparts
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