Looking on the official site for the sequel, Itsuwari no Kamen ('False Mask' seems to be what most people are going by) has a lot of returning characters. I'm looking forward to meeting up with Touka and Karura, Benawi and Kurou again and seeing what they've been up to.
I actually don't have very high expectations for this as a game, so maybe I'll be pleasantly surprised. Sadly I'm not going to be finishing this any time soon, because I'm going to temporarily drop it once Yoru no Nai Kuni comes out on October 1, and this upcoming weekend I have other plans, so I probably won't get to play it much. I can at least put in 5 or 6 hours to get a taste, though. Look forward to embarrassingly bad attempts at romanizing character names. By all means, if anyone stops by here and does know of some official romanizations for the characters please share them with me ASAP.