Yukari Maribel pic
Hmm, yea, that's an awesome pic. But... I'm too busy typing posts to convert it and upload it to a photobucket account right now. Maybe later.
TOYOHIME HAS BORDER POWERS?!
She does. It's only briefly brought up in Silent Sinner in Blue, but Cage in Lunatic Runegate confirms she does. You can read the Cage in Lunatic Runegate chapter at Touhouwikia (or at least, most of them. Sadly the final ones aren't translated, but the one that shows Toyohime's border powers is). They call it a barrier there but it is shown that Toyohime has the power to manipulate it.
http://touhou.wikia.com/wiki/Cage_in_Lunatic_Runagate:_Chapter_3(Toyohime also wields a fan and wears a ribbon in her hat. She's obviously meant to be the moon's Yukari, symbollically speaking of course. If you really wanted to, you could come up with all sorts of speculations about her being an alternate universe Maribel, but that's ridiculously speculative)
The Lunar Capital is in a separate world just like Gensokyo (Pretty sure both Magical Astronomy and Cage in Lunatic Runegate state this). In a way, you could call it the moon's Gensokyo. So it's logical that the moon's denizens would have their own Border people to maintain it.
""The lunar capital is on the far side of the moon, protected by a barrier that hides its existence. As long as that barrier is in place, a human could never reach it. To make its way into that barrier, the crow would have to fly along a predetermined route, but somehow it was following the sea road that should have been invisible to it. With almost computer-like accuracy. ""
"A barren mountain devoid of grass or trees, the remnants of machines from the humans' lunar expeditions, a black sky. And, a world without any air.
The desolate near side of the moon - this is the lunar world that the humans discovered. It is an exceedingly cruel, lonely world.
Having suddenly lost its atmosphere and gravity, the crow spiraled slowly towards the ground, foaming at the mouth. Before long, it expired. Unable to breathe, it asphyxiated.
I have the power to connect the mountains and sea. I am also the only person with the power to connect the near and far sides of the moon.
Once I'd confirmed that the crow was no longer moving, the sea was filled again with water, and our plentiful land came into view once more.
"
(this also makes Toyohime the only character to actually kill something "on-screen" in the Touhouverse)
But... I'm getting off topic now.
Sakuya can't time travel either. I however assumed that the combining genes of boundary and time/history power might allow time travel power. Genetics is fun! :V
Perfect Memento states that she could technically reverse time, but it's difficult and the way it's done ends up being that she might as well not have reversed time at all.
I had a speculation where Maribel met an alternate universe Sakuya on the moon (before Remilia changed Sakuya's fate) which led to Maribel's ultimate time slip, but I have trouble believing this theory is true, because Maribel already met Sakuya earlier, which implies that Sakuya existed even when Yukari didn't. (and yes, I did examine Maribel's and Sakuya's meeting, and all the connotations it implies. Again, I'll go into that later)
My current wild mass guessing theory is tha Maribel ran into alternate universe kaguya, who has the power to control eternity, and her powers mixed with Maribel's to send Maribel flying back in time. If you remember the original bamboo story, it had a bad ending where Kaguya goes back to the moon in the end even though she wanted to stay on earth. Of note is that Yukari's first sightings were 1,200 years ago, and Kaguy's story in the Touhouverse takes place 1,200 years ago as well. But.... again, this is COMPLETELY speculation. .This theory too has its own problems, because Yukari doesn't seem to recognize Kaguya in Imperishable Night (she DOES, however, recognize Mokou, which at least confirms she remembers her Mokou meeting as Maribel. ... er, well, at least, it implies it. Again, I'll go into that later). Alright, it's time for me to get back on topic, now.
I promised I'd go more into Keine and Sakuya in regards to Yukari, so here we go. I'll start with Keine. Stay tuned while I write it up! ...yea.