I know it exists ..and I will find it

[Fangoram the Shaman king]

Boku to Maō/Okage/me and satan king
It was a huge game in japan that never got alarge fan baseover here(but we do exist in the shadows of deviant art and other outlets on the web) and my all time fav for story
I have herd many rumors and some whohave sworn they seen an ep. of it

[Lestat69_99]

......Nope way to easy...I'll leave it alone...

[Dreams]

No, doesn't look like there's an animation for it. Here's the searches I did in Japanese on Google:

"Boku to Maou"
"Boku to Maou" Anime

Also:

"Boku to Maou" on Amazon Japan
"Boku to Maou" on Yahoo Japan Auctions

Feel free to poke around yourself.

FYI, ボクと魔王 = "Me and the Demon King" / "The Demon King with Me"