Currently the rough drafting, storyboarding is slightly done <3

It's a pretty dirty story, and rather in a horrific sense of the word as well. As it stands there won't be too many backgrounds due to the few places the story takes place in. 

There are probably going to be 10-15 at most.

I'm also keeping it up to the same style backgrounds as yandere wonderland.

The characters face will have a sketch/painted appearance, I feel the style is kind of suits him(Arios) that way and the direction I want to go .

As far as story goes.

2000 words of the intro is completed.

In-game audio has also been added along with an animated menu screen.

After the story is done. It'll be about the art ;)

There will be a lot of CGs including R rated ones.  So you don't have to imagine too much.

The game will probably not include gender as the story doesn't really imply whether you are they/she. It's going to work either way where he won't  address your sex, other than the fact that you can be impregnated, making you a suitable companion.

So I don't see a need to add it. However,  you don't have male parts.

There may be a map added to the story of the small vacation home, just for visual sake on the area you are in. 

As far as endings go. There may be an ending? I'm not 100% sure yet. Given the content of the story. Arios makes endings pretty impossible.