Firstly, I appreciate that you try to make the game humorous, and that you balanced the game's upgrades so it's genuinely fun to play!
I understand that game dev is really difficult, ESPECIALLY when the income is unstable, and continuing gamedev despite these pressures is in my opinion very admirable. Please take care of your mental and physical health above all!
I'm sorry if this advice isn't any good, but anyhoo, here's some of my feedback!
1) If possible, can fishing be more rewarding? Now that mining is available, it seems like it's a strictly better way to make money. If there can be an upgrade that allows you to catch, say, only rare or better fish, that'd be great! Alternatively, if you can "accidentally" catch a treasure that can sell for a lot, that also seems like a solution! On the topic of fishing, I feel like fishing is a tad over-tedious, and farming for fishing genuinely makes my hand sore (laptop).
2) After the prologue, is it possible to make depth-friendly capture targets? I feel like as of now the affection progression is a tad too story driven, and I don't really have the freedom to say, maximum invest actions into a certain girl. Being able to choose which capture target to maximum invest in is a very appealing gameplay element to me personally, though I wouldn't be so bold as to say it would be for everyone.
3) As of now, I feel like sending girls to jobs quite actively hinders the objective of the game; only guild members can be sent out, and guild members are primary targets to build affection with, so you're kinda punished for trying to advance the story and send people out for missions. I'm sure this will change once more targets are introduced and you're out of the prologue, but that's the feeling I've been getting so far.