Part 27: Update XXIV: An Alchemist and the End of her Journey, San: The Lap of LuxuryTo get the Rich Ending, you need to possess over a million Cole by the end of the game. In addition, you need to have not tripped any ending flags whatsoever. Basically, the only way to do this is in one playthrough is to exploit how the game gives you requests. What you need to do is play the game up to making either the Ruby Pie or Golden Pie, register it with Iksel, then get rid of everything in your Basket (you can leave equipment. Esty never asks for non-accessory equipment).
Like so. Buy the Pie (more than 6000 is a hefty sum, but we can swing it), then sleep for a day. Then, go to the castle and talk to Esty about requests. If everything went fine, you'll see this.
Lovely. Even without fulfilling the extra requirement, that's a plenty healthy amount. There's about a 3000 Cole variation in Ruby Pie requests, but it will never be less than 21k. Turn that pie in, buy one from Iksel, and then sleep for a day. Rinse and repeat. You can break 1 million before the end of the 10th Assignment if you're diligent. The Golden Pie gives you more, but it really doesn't matter. Anyway...
Rorona! Hey, Rorona! I know you're in there!
Huh? Cory? What's up?
What's up!? I thought you promised to hang out with me today!
Oh, I did? Hmm... Sorry, I'll pass.
Why? I don't wanna move...
Grr...! Fine! Stupid Rorona!
*fade to black*
*sigh* What has gotten into her...? I guess I'll need to have a serious talk with her soon...
*fade to black*
I want to work, Master.
I think we have taken it easy long enough. What would Grand Master say about this?
Ugh, well...come on, just for a little while longer. Okay?
...Fine. But only for a little longer.
Rich Ending B
Rich Ending - Cordelia
Rich Ending - Iksel
Rich Ending - Sterk
Rich Ending - Lionela
Rich Ending - Gio