How should I know? I just discovered this game a few days ago through a PornHub video.
Kyoka Also, how much money should I aim for in before I start splurging on customizing my base? Should I pay off my debt first before I do the more fun stuff? Also, isn't one of the named NPCs a cowgirl who looks like Uzaki-chan's Mom? If so, how do I make her and every other unique NPC a slave in my brothel business empire?
The money you need depends on the difficulty,
on easy iff you get 5K and you have 2-3 slave girls who produce babies then you can upgrade your rooms.
Tho i would chose the 2 hitsuji (sheep girls) 1st to get the brothel upstairs then you can make more money.
But iff you do make sure NOT to end the day with girls upstairs or you risk losing them to escaping,
but they wont escape iff they are maxed out on depravity,
You can only get the main heroines your slaves on your private estate once you reach day 50.
You make them your slaves by getting 666 lust energy from the tentacle girl who lets you use the tentacle rooms,
throw in a couple of slaves to the tentacle room for monster eggs then after you have more than 5 sell the rest for lust energy. Once you have 666 energy, you can activate the tentacle girls ability to make one of the main characters your slave,
then you need 666 more energy to enslave the next one.
You can get the Cow girl by doing the achivements for the main girls but i cant remember wich one,
iff you do them all you get one Special slave girl for each main girl's achivements you complete 6 in total iff i remember right,
the cow girl is one of them.