Good game.
The gameplay is solid but it really doesn't represent any challenge, probably because it's mostly a plot driven game. The characters have a lot of charisma and good characterization, you really see a dynamic between them. The plot was quite good up until the end, where they pull a dude who looks like Friend from "20th Century Boy" out of nowhere. It's almost as if the devs didn't knew how to end the game properly. Where did this guy come from? Why Shade's friend didn't suffer the same consequences because of his deal with Foam Gum? Really, this ending ruined the what would otherwise have been a solid 9/10.
Music and Art is quite good, so much that I bought the OST and "Artbook" too.