Now I can't speak for "Journey of Takanuva," since I don't own it, but Dark Mirror and The Kingdom both seem to claim to come first. It's almost a "pick your favorite" situation, where you have to pick one and reject the other. But upon closer inspection, we can see that The Kingdom is more obviously the first dimension, while Dark Mirror is more subtle; It didn't have to come first. In fact, Takanuva has the power lance in Dark Mirror, so it has to be after The Kingdom. But where does Journey of Takanuva go? Since he had the Power Lance, shouldn't it be either be second or third? Yes. I don't know why it's often considered first in line. The Power Lance is pretty trivial yes, but it helps place the story. So this is what I put together:
1. The Kingdom
- Stated to have been sent into the interdimensions by Brutaka. Received the Power Lance here. At the end, Brutaka used his Olmak on Takanuva again.
- Stated to have been sent by Brutaka (doesn't state which universe's Brutaka ) He has the Lance in this story. At the end, he leaves through a portal
- ??? I have little knowledge about this book. Maybe there is some reason inside it that would change my opinion? He has the Lance, which would seem to place it at the end. But I've seen the argument that it was first even though he had the Lance, since he had to look like the set for the book to be approved. For me this begs the question, "why does this story have to come first?" I've been unable to find any hints that it was the earliest story.