He is active here on f95. So I guess he would answer if he had not dropped the game? It really is a shame though, if he has... So god damn much potential for him and the game
I wouldn't assume it's abandoned yet. Yes, it was about 7 weeks ago, but the dev actually posted a response to a comment on their profile. If they were actually trying to hide or whatever folks are trying to imply, they wouldn't typically post something to their profile, confirming they're still around. And yes, obviously it would be ideal if he responded, but there are many people who very rarely (or even never really) communicate, even to those you'd expect to be kept in the loop. I'm not saying that's a good thing, but there
are people who struggle with doing that. It doesn't mean they're hiding or whatever.
From a late December reply to another post on their profile, they said they had hired someone to help them and were getting things set up. So maybe some of the delay was getting that team member squared away and up to speed on things. And given that the last update was in October, this is now only 4 months since that release. There are plenty of devs who do VNs / games only part-time as they continue to work a full-time day job and deal with whatever else life throws at them. We have no idea how much time MaterTuaGames is able to dedicate each day or week to develop this. It's totally possible 5 or 6 months is reasonable before the next release. We just don't know.
I'm not trying to say they for sure are still working on this; I have no idea. I'm just saying it might be a little premature to assume things are abandoned.