If you don't follow unko on ci-en, they recently recovered from a breakdown a month ago but announced their departure from making h games, likely permanently. It's really sad because this series and this game especially is such a masterpiece in its charm. Supposedly it started from a particularly harsh feedback on one of the alpha demos for the taima miko action game that was supposed to follow this one, but I doubt it would be just that.
I know I'm saying this on a porn site, but in a time like this where eroge as an artform is at risk by both genAI and the overreaching hand of cc processors, we would do well to keep supporting these creators, there's still people behind screens.