Its super hard to know. I'm guessing in scenes it's 65%. but a lot of the time so far has been coding, backgrounds, ui and all that is done for good very soon. then the upcoming NSFW scenes willy have a ton more art, different angles, animations etc so even if it's less story wise It's hard to say if it isn't more than what we've done. Anyways we got a part 2 of the game planned. part 1 will have it's own ending and closure, leaving some less important ends open,  and part 2 would fill those smaller plot holes and have one new big major plot. We're very excited :D!