When the idea of a new YGO was proposed, Takahashi Kazuki drew a sketch with the caption, "Five dragon cards led us here." The concept wasn't used in GX, but it looks like it's finally appearing in 5D's. :
Wouldn't it be fun if one of them was the Satisfaction Dragon, shown here at the Satisfaction Shrine in Kyoto? (about two-thirds of the way down the page)
Wouldn't it be fun if one of them was the Satisfaction Dragon, shown here at the Satisfaction Shrine in Kyoto? (about two-thirds of the way down the page)