I personnaly don't see this game abandonned.
BUT it has a lot of things that play against it:
It is the first game of Stoper. So he is descovering things about what to do and not to do all along.
He is a perfectionnist and that's the main problem for speed update BUT a hugh advantage for the quality.
He decided to tell the story
day by day. That's is aslo a big mistake (IMHO).
If you want to show "realisticly" a rightous woman falling to her unknown kinky/slutty side, this take weeks and months to happen, accumulating experiences after occasions, that fuel the "depravity" little by little so her mental doesn't brake and she embrasse it fully.
By rendering day by day
and wanting to keep it realistic, it's going to take a lot of time.
At one point or he's going to be force to rush an act (and fans will rant for that - while fapping like crazy horny <name_ any_thing_here_that_suit_you>) or he will take forever.
All I wish is that he turn the tide to her derpavity soon so maybe the slutty and kinky scenes will fuel his inspiration and motivate him.
All to say that: I LOVE THIS FUCKING GAME GOD DAMN !!
PS: Oh and about the deadlines he gives... I just don't remember them.