Level-5 revealed in a recent interview that the reason why Rental Weapon Shop, a game in Level-5′s Guild 01 compilation, has not been announced for release outside of Japan is that the game relies heavily on knowledge of Japanese culture and also contains large amounts of text. Because of this, Level-5 is still considering whether or not it would be beneficial for them to localize the game. Level-5 also revealed that they hope to release Guild 02 outside of Japan, but currently have nothing to announce as the game is still in development.
On a slightly related note, Aero Porter, another of the games in Guild 01, will be launching in Europe and North America on the 29th of November. You can check after the break for some screenshots from the game.