'Kay, bear with me a little, I''ve got a spanish version of the game so some of the variables (mostly description), will be either in JP or in ES, none in english.
First, you've got to get wolf editor running on the game, there's a lot of guides out there for that purpose.
After that, you'll have this:
The button selected with the arrow, the blue one, is the one we want.
Now, you'll want to select the "type" field to be 19, those are where the variables that modify the values i talked about can be changed.
I only tried to change the stages, because the other ones seem to have triggers that are not easy to modify this way.
Select a stage, ie STAGE 5, and you'll see this:
In the second field you've got the name of the stage, third and fourth fields (numbers two and three, i believe this is an array so the index starts with 0), are the times of day in which the game starts and finishes, so if you want the work day to span from 9AM to 9PM, you'd want to select 9 and 21 in those fields (It's a 24hr system)
The field number 15 and 16 are related to income, not sure on how it's calculated, so just bump it up and you'll win a lot of cash. (The ones that hold 10000 in their values)
Now for the characters:
Page 2 has the characters, in the fields number 20 through 24
Of course, the char names are in JP, but i believe that the female chars are the 30s and the males are 20s. I believe that this is the way the variable works: [variable number]: VAR NAME [Var that holds the user (Not important)]
For reference, the var number 22 is the little boy, The 33 through 36 are: Chubby girl, Noble Girl, City Girl, Beast Girl (Not in order, need to test if are selected.)
When ready to save, just click update and restart the game, no need to close the editor, this way is easy to test for results.
I was able to track where to add the special characters, like the blonde or the wanted ones, but there seems to be a trigger on a script that's based on the stage, as I can't access the code, I can't modify the scripted appearences.
That's all the useful things i've found, shoutout to google lens for the quick translations.
Edit: I'll repost this on the main thread of the game in case it helps more people.