This game crosses into territories that are rarely explored. I think, this alone, is why I enjoy it. Oddly enough the good doctor going along so easily is odd to me. It feels like there should be a prequel or more history between the MC and the Dr. that explains this Harley and Joker dynamic. Turning her would be more exciting, but when I take a walk down this path further in the game, it didn't turn out like I expected. Its like she is fascinated by MC, but doesn't want to experience his demons first hand and the MC doesn't value or appreciate her willingness. Their relationship is professional fascination and courtesy which detracts from the MC behavior for me. I was glad the MC didn't involve Carla's daughter, but I felt the MC would have threatened colorful and details things he 'would' do if Carla didn't get in line. I really liked the green card swipe tho. The slave thing is superficial. He is pretty in-depth in public or in other peoples house, but when he has a captive audience in a dungeon its lesser content than the former.
These are the only items I can think of to improve upon. I also do some writing as a hobby and can say its good to power through until the end and then go back and edit.
All that to say, this is a gem, worth the playthrough. I think the Dev knows this as well as this is the longest he has gone on a game. He was looking for a groove and found it. I hope this Dev finds success and the motivation to continue such fiction.
I am looking for a deeper connection from the MC when he finds his mate. Be it Abigail or the Dr. or both. I will expect, demand there is much that can be explored and that we will see demons playing together. Both Abigail and the Dr. can be corrupted into being what the MC truly needs. May they be lost in his lust, the most glorious hell-scape the MC can devise.