I've only played Emilio's route so far (I've gotten Rings of Promise and Rivals as endings) but I definitely planning on playing all the guys. The art is GREAT, SO, SO, SO GREAT. Everything is so crisp, the sprites are original and well-designed, and the background has great detail. And I love how this game offers a tutorial in the beginning, as well as a glossary for all the 1920s terms (not to mention that it incorporates those into the game so well too)!
(A plus is that the protagonist in Chinese! As I am one too, I was pleasantly surprised, and I even ended up using my own name, something I never do.)