Hello,
I got to the part in the story where you had to choose whether to pull out of Nation of Idols, or stay in. I chose to pull out, and the story progressed as I assumed it would. I then got to the ramen shop scene with my rival talking to me, and they began saying dialogue as if I had stayed in the show, and talked about how I got an hour of broadcast time. I had just gotten out of a chat where an idol talked about how none of the groups had showed up, so I'm not sure what was supposed to happen. This is on build 20 and I didn't use cheats to activate it.
Edit: I can confirm that I had the "Thanks for pulling out [Your Name]" from one of my idols, except now the entire story has changed and the idol that was thankful for me pulling out is resigning because we "showed up to the event".