Robot Alchemic Drive. Talk about an underrated/unknown game. I just picked it up a few days ago, since I saw it on Amazon for like $8 and I saw it mentioned on X-play some time ago. Little did I realize that my favourite anime studio and the artist for Cowboy Bebop (and later Wolf's Rain) worked on this game.

It's a Blue Disc game from Enix. That should date it. Hidden Gem methinks.