You can download the demo easier on steam. However, the following is my review of early access of this title:
The early access has one huge flaw that cannot be ignored. The "interactive" mastery cut-scenes are just heavy fast clicking that draws your eyes away from the beautiful 3d/cg renders! You can't even watch the sequences in a playlist from gallery later, it's one at a time (pics and animations) in the current build. It would be far better to make the extra screenshots be earned by hidden objects in the game instead of that clicker nonsense. Not to mention there are no "money shots", it's wonderful cg scenes and the MC "shooting his shot" off camera. Even the first scene with Irina, she says she swallows, doesn't happen. It just cuts to her in a bit of a mess.
I'm torn because this game has some of the best cg animations/models available in an adult title, but those animations are hindered by bad mechanics. I can't currently recommend the game due to this.
I really enjoy the story so far and plan on completing it, but I hope the final release implements changes to allow players to enjoy the beautiful cg that probably took ages to complete.