Wow, played through the first couple of chapters, and I definitely see this game becoming another one of those cult imports, like JUS and Ouedan. It starts out so simplistic, and my first reaction was to think it looked nice but was not going to be much fun. By the second chapter, though, the game throws some really fun things your way. It's also incredibly intuitive, made with what seems to be outside (from Japan) markets in mind. The game's forgiving too. Rather than have you repeat entire segments -- should you fail in one area -- the game brings you back to just before where you fell short.
Can't say I'm a fan of the manga, though I'm familiar with it only from JUS, but it's certainly a gorgeous game, much in the same way that EBA is. It's also very interesting. Though I can't understand a lick of what they're saying, the storyboards convey so much.
People need to check this one out, and I'm certain we'll be hearing more about it in the coming weeks.