I got back to Kazama's part of the game in Chapter 9 and am going to get into the real estate stuff that I initially didn't bother with. God, it's so confusing and I had no problem with the Carabet stuff.
I looked up a guide for it but it only went over the basics. Is there any good in-depth guides?
its not that complicated, really.
kamurocho is broken up into 5 districts. you own properties in each district. you "collect" on these properties through a menu, which starts a timer to pay-out. you collect your money when the timer expires.
how much money you get depends on cumulative value of all your businesses in the chosen district-- this is the quantity (how many businesses you own) and quality (what their letter grade is). you buy properties by running up to them in the world and hitting x. you upgrade them by assigning an advisor to them, choosing the best based on what the advisor's stats are (x, triangle, circle, double circle in a variety of business types, pick the relevant one) and then spending some money. you can only upgrade once per collection cycle.
money earned also depends, to a lesser degree, on who you've assigned to manage that district. managers have star ratings/pay scales that basically indicate how good they are, but if you want to drill deeper, they've got some random spread of numbers that are like 0 1 1 2 -2 or something. these numbers are just little modifiers for how much money you get. 0 would be their first collection run in that district, then they cycle through the 1s, the 2, and max out at -2. so, their 4th collection will be the best, and the 5th (and all subsequent) will be their worst. you get around this by cycling out managers.
the last thing to note is that you also assign security staff. i don't think they actually do that much to be honest, i've never noticed. theoretically, bad dudes will try to harass your collections runs and you gotta go punch em to stop it, but it rarely happens to me to be honest, maybe because my security staff is good? but just cycle them out whenever you cycle managers and it's fine, whatever, they don't seem important really.
that's kind of it. collect money, spend it buying or upgrading businesses, collect more money, repeat. you get new and better managers, security and advisers through substories.