Glad to hear you have plan of making patreon! Don't stress that much on it for now, I think making more content of the game first.
In fact, the game is currently lack of story for players to explore. Do you have any difficulties in scripting storyline or drawing character art and CG?
So it's been awhile, I'd like to know any progress of you project!
Actually it will better if there is a social account(Twitter, Patreon, etc) that post update log, which I can know this game is still developing or unfortunately canceled.
