From the third floor, it seems like it will be difficult to not be a part of any faction here. I learned this from the guide whom I called while everyone is trying to invite me to their group or faction.
"There are many Labyrinths in this floor. Just clear any one of them and you can get to the next floor. You need to find the Labyrinth on your own. Well, that was the only thing I would say to you a long time ago before people created settlements here. The next information is a bonus. Many of the Labyrinths, especially the easy ones, are under control of many factions in this floor. I guess you already understand what I'm going to say. Good luck," the guide said before he disappeared.
I didn't bother asking him about anyone from Earth #2 or Earth #9. There's no need to look for anyone here. I'll just look for Grima, my master, in the next floor.
"Join us! Join us!"
"No! Our group is better than theirs!"