I'm glad the game is performing well. Last game i played was Atelier Ayesha and that was pretty fun actually. I pre ordered the limited edition of Atelier Ryza a while ago. I would say the main character design is what making the game sell so well. I have seen a lot of fanart of Ryza being created which certainly has helped promote the game. Even some artist have been mimicking the Atelier art direction on some of their work. Such as this one.