I registered here just so that I could personally thank everyone involved in this project! This is something that I have been dreaming about for years. Sure, the game is perfectly playable in Japanese, but obviously it's always more enjoyable to play a game, when you are able to understand the - in this case, as it turns out - quite lousy story.
Thanks again for this!
And I disagree about the challenge thing. It is, at least to me, pretty difficult on single player. At least the bosses. This game was designed for multi player and gets considerably easier then. Every character in the game refers to you as "heroes", even if you are alone. Get a friend or two, and have a blast with this gem.

By the way, if you're looking for a challenge, as well as a game just like this, I recommend Dungeon Explorer for Mega-CD. Considerably harder than this. Very, very difficult - and has five player support instead of just three. It also has money for buying new equipment (fun). In addition, you can level up in it, which is a shame, because the game relies heavily (oh, how heavily) on grinding, which makes it less enjoyable than Crystal Beans.
And if you're just dying to play a game that can (only) be described as "brown", I will recommend the two Dungeon Explorer games for PC Engine. For a system that could produce so many colors, you'll be surprised by how these games look.