I only have some previews in japanese magazines I bought the time when it was going to be published. The graphics doesn't look that good, considering this is an Arcade-Card game.
I've heard, at some message board I can't remember, that it's not that good game. Dungeon Master with characters from the PuyoPuyo universe. But as long as you are also interested in it, because of it's rarity, I think it's worth it.
BTW, did you try to buy your KazeKiri from this Hong Kong based dealer who had 6 copies of this game at a time? If so, I also tried to buy something from this guy. I can't remember his ebay account name. But I can remember that I got an email from ebay, stating that this seller is deleted from ebay. Luckily I didn't transferred the money at this point. But I heard that he screwed many people. He had many quite rare and expensive titles for sale in relatively large quantaties, like KazeKiri or Metal Slugs AES from the NeoGeo.