Once, I like this game ... but it seem, Dev choose the dark side.
First... it's a slow development progress, how many ? 2~3 months per update ?
Second... wasting time, milking out and slowing down the inevitable incest sex scene.
... okay, let me be fair. I state the negative, now the positive constructive critic.
Get it done, fast. Don't spin around with irrelevant plot. This game start with incest theme, yet you make Aunt's scene so well. Why you have to do that ? ... if you want to make female protagonist, do it on another game. 100% who play this game and STAY, are because Mom&Son plot. Not Aunty & The Driver, or Aunty & the shota next door. You fucking up your own follower wish. Stay with the theme ! ... if you keep changing, then people losing interest. What next ? ... Dad with waitress ? ... Dad with Secretary ?
Then, no need to make this game longer than it require. Make it simple, finish it, then move to Sinful Delicacies 2 or new title. Why ? ... Because with slow development like this, 2 months per update ... you are either super lazy or super busy, so, I suggest you keep each project short. If you want to make a long VN, then you have to be commit and dedicated to the project, also have more spare time for it, or make this as your main job.
Limited Developing time => Short Game
Full time Development = Free to choose, either making series/many of short games at once, or a long one VN game.
Ok, that my take on this game. Dev read it or not, doesn't matter.
Rating : 4/5 Stars game quality, 1/5 star development quality.