Not really a good trailer, but this was only a teaser trailer really, so no more should be expected.
This is a TBRPG, or what?
Does it have a lot of strategy involved?
Are there any riddles?
It looks fun, and as much as people seem to love it, I might purchase it.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS