Unfortunately, you might be waiting indefinitely. There's a whole history to this, but the top-level bullet points are:
- Originally Mobum did this as a fan of other games.
- He decided to try to make money, using Patreon.
- After awhile, Patreon said this somehow violated their terms (girls were too loli? can't remember for sure now).
- He paused this while he worked on a different game Patreon accepted, Runaway Princess.
- Now apparently there are laws in his country prohibiting him from continuing to work on the second game as well.
So unless he moves to a country with freer laws, he isn't going to be doing
any adult game development. It's been a rough ride for him.