This game has two endings slut and pure. Normally slut ending would be somewhere on the bad side of things, but in case of Karryn's Prison, both endings gave me the same good/neutral vibes.
If you want to get the pure ending, follow the advice of the person above me, but I wouldn't recommend that.
Pure ending requires you to intentionally avoid hentai content in this hentai game and.... why would you do that?
Try getting the slut ending first, and even if you lose, you can start a new game plus, resetting your stats and passives, but keeping the titles you've obtained. Titles will make the game easier for you, for example, having few bar related titles from the start will make make you earn money faster in the early game.
A lot of fun in this game comes from exploring and learning. It was designed with a lots of traps to turn your Karryn into a slut whether you want it or not. In my opinion, the best way to enjoy a pure ending run is to treat it as a test where you try to push your knowledge of the game's mechanics to the limit. If you try to get a pure ending without having some fundamental knowledge about the game, you will just get unnecessarily frustrated.
There's probably a better way to do that and I'm sleepy so my explanation is going to be shit, but try editing "RemtairyEdicts" and making the dexterity edict 1 increasing your dex by something like 5.0 instead of 0.10.
This will make your dex super high and your sex attacks very strong, but they will also cost a lot of stamina, so you've got to also edit one of the stamina edict and make it increase your stamina by a lot too.
And remember to make a copy of the file before even touching it.