Unsaid still talks in the Discord from time to time. He mentions that he is still working on the game and intends to finish it, if that's any consolation. From what I've heard from them, they simply don't have the time they had when the initially started and things took a wild spin downhill in terms of time to actively work on the game. As far as I know, work became a much bigger focus than game development, not by their own choice. They're still on good terms with UraMomo and both of them are active in the Discord. I personally believe it'll release, just not any time in the foreseeable future.
Something to keep in mind is the programming was done exclusively by Unsaid, and the art assets were created almost exclusively by UraMomo, in addition to him providing Japanese translation. Only time will tell at this point. The art assets for the game are completely finished.
Another thing is, I recall the original plan was to push out demo versions every so often, but it was quickly decided that it wasn't a good idea in his case, so we've been in the dark for a reeeeeeeeeeeeeeeeeally long time in terms of visible progress. That's probably the biggest issue on our end. But, yeah, if you ever want to poke the guy in Discord and ask questions, he checks and responds when possible.
tl;dr: Unsaid has clear intent to complete the game and things are proceeding at a dreadfully slow pace with a small amount of transparency. Ended up typing out way more than I initially planned.
