Gantz Vol 0 anyone knows what is it?

In Gantz anime I saw a promo for Gatnz Volume Zero does anyone knows what it it? A manga volume? An Anime episode?
http://gantz.ru/r_colored/vol0.jpg
Can anyone translate what is written here?

i cant see the pic :/

re-upload it please

Here you go. Whoever no one knows what is it.

I'm betting its a anime soundtrack or something.

Here's the best I can do translating it:

Gantz vol. 0 Young Guns

Waanaa Music. Japan

actually...
it is "Young Gantz"

Warner Music

おわかり？
必要なら、僕がガンツの翻訳に協力しますが...

Oh... It is "Young Gantz" isn't it?

And "Waanaa" is suppose to be "Warner" :shock: . Jeez, no wonder their English is so bad.

Whever translation does not reveal what is it Gantz vol. 0

this may help just found it
http://www.mangazero.net/manga/syndicate/zero1/
its a manga from Oku

huh thats that maga about the kids in the game right, i got up 2 volume 3 as far as i know it wernt translated any further