They showed a lot of party members after the main ones, so I think they're just guests.
Very happy about the release date, now Trails to Zero won't release in the same month as one of the biggest RPG franchises and get entirely overshadowed.
I don't think this was supposed to be hidden like that. I think it was a glitch that they never fixed. I could be wrong though. On the topic of Nayuta,
Hahahahahahahaha. No. No that's not what I mean. I knew you didn't get it because you didn't mention it. Go back and do it again. For some reason, you have to go back through that ending scene a third time to get the TRUE post-credits scene. You'll understand.
Oh don't worry, ALL of what happens in that book is true. And yeah, 3 and 9 became S tier immediately. All of the C team in Reverie was S tier immediately