But Kiba?! For your preorder gift? KIBA?! KI-kittening-BA? That's like giving One Piece fans a special bonus preorder to read a one-shot of one of the old henchmen of Buggy, the one who got color changed literally.
THIS IS YOUR HYPE?
Well, That's kinda over exaggerating much.
Kiba may not be a fan favourite, but he does have quite alot of fans.
So, mabye there was demand for Kiba in Japan, and Kishi probably felt guilty about his character. So, he's doing this.
Just my assumption.
But, I see your point, it would've made more sense if he did a Sasuke one-shot or a Gaara one-shot or something on a more popular character.