Sorry for the late reply. I started reading the manga translation (by Rebecca Capowski, whose translation I do trust for nuance) and c/p'ing stuff to quote and it just got too long. The summary is, yes, the manga does seem to support the idea that human need created (evoked?) Althena and Lucia. However, I'm not sure that that's making a statement about the Lunarverse itself so much as what Lucia herself comes to believe:
[pg. 132]
Zophar: You may deny me my existence,
but it was the humans' hearts that revived me.
I awoke because the people bade it.
Lucia: The humans' inability to destroy you was the reason for Althena's
birth...
and my existence.
[pg. 150]
Lucia (thinking): Humans
gave birth to Zophar.
[pg. 156]
Lucia (sidling up to Hiero damsel-in-distress-like): Zophar.
If negative human emotions - the power which invites death - were what
spawned you,
then it is human thought - their hearts which love and care for others,
their power to believe - which composes Althena's power.
You, Althena, I myself -
the wishes of the people gave form to all of us.
While
Lucia may have come into existence because of the harm Zophar wrought, I'm still not convinced that the intended meaning is that Althena and Zophar came into existence as well from human wishes, just that their roles as "gods" did. That is, Althena may have already existed (the beginning of the manga says that she "descended") but was called upon to lead and help humans, thus becoming their goddess, just as Zophar became more powerful with the evil in humans' hearts lending him strength.
Comparisons between Lunar and Christianity rarely work out well, but one might make an analogy: people refer to Satan as being the opposite number to God, an evil god. Yet he began as an angel, not a being equivalent with God. Althena and Zophar, and later Lucia, may have been something more like angels, or other beings "higher" than humans, whose interactions with humans redefined them (and perhaps powered them up, so to speak) into gods, relative to humans. I actually have a whole backstory fanfic-y type of idea going with that, but since it IS essentially fanfic, I'll keep it out of this, especially since my disdain for fanfic is well known here.
Here's the bit from the beginning of the manga, with the backstory:
pg. 6
Long ago, Zophar, the god of destruction, appeared on the Blue
Star.
Amidst the fear and chaos, what resistance the people offered
was rendered insignificant and inconsequential before Zophar's great power.
Desperate and helpless, the people could do nothing but pray for a miracle.
Just when it looked as if the world would fall completely into the god of
destruction's hands, the goddess of creation, Althena, descended.
The goddess Althena used her power to seal Zophar away, but the gods'
battle left the Blue Star gravely scarred.
With her remaining power, the goddess filled the Blue Star's
sister planet, Lunar, with water and lush life
and led the Blue Star's few surviving humans there.
Reincarnating herself over and over, she continued to send forth the power
needed to revive the Blue Star.
However, somewhere, sometime, at some point, Althena disappeared from the
people.
The tales of both her existence and the genesis of Lunar were relegated to
arcane legend...
And so the people forgot - about the history of the Blue Star...
and about the existence of another goddess...
My reactions to "Zophar appeared" and "Althena descended" are that they already existed and mainly arrived on the scene. It would take a fluent reader of Japanese to determine whether that interpretation is supported by the actual text, though. I imagine Kizyr will address it when he gets to that manga.
I should probably also note that that account directly contradicts the opening text in both EB and EBC, which state that Althena terraformed Lunar as a separate project,
before the need for a refuge arose, and make no reference to power usage and output (other than the Blue Spire collecting power, of course -- which is not in the version of the game on which this manga is based). Also, to address a point earlier in our discussion, people forgot about the history of the Blue Star and of Lucia. So in this version they knew about her already, once. The next scene in the manga is of Hiro looking at the reliefs, ending with one of Lucia sleeping, and wondering who she is. On the other hand, Althena herself is called a myth, which I don't recall ever happening in the games. That is, I don't remember anyone doubting the existence of Althena.
Here's a bit that directly contradicts the novels but I think matches the implications of the games better:
page 39 wrote:
[Lucia sees Althena (or remembers a meeting with her in her dreams). The
Dragonmaster is behind Althena; we can't tell exactly _which_ Dragonmaster,
as the face is indistinct.]
Althena (in dream): I entrust the fate of this planet to you.
One day, the Blue Star will be reborn. Until then...
[We see that Hiero has set sail. It's night.]
Lucia (thinking in dream): I am the guardian of the Blue Star.
With the power of Althena that emanates from Lunar - my planet will
revive.
Okay, so much for the manga. I also checked the EBC strategy guide. Excerpts from the animecheck:
Lucia, in 'Death of the Blue Star', wrote:
Long ago, Zophar, the god of destruction and darkness, came to the Blue Star.
[description of Zophar as a malicious monster; carvings depicting war]
He preyed on mankind's greed for wealth and power, creating anarchy and chaos where there once was peace and love. Mankind fought one another with furious anger, spilling the blood of others without thought of consequence.
[description of carving showing Zophar floating]
Feeding on the dark desire within the hearts of humans, Zophar's power grew exponentially.
[Etc. Used power to pervert mankind, resulting in wild humans transformed into hideous beasts, and so on.]
[Description of carving of people kneeling to Althena in supplication]
The people suffering under Zophar's tribulation implored Althena to rescue them.
[Etc.]
The point is, he (1)
came to the Blue Star, (2) was shown as a monster before the description of his preying on mankind's greed, and (3) grew in power from that preying. (I've always thought her use of "exponentially" in that line was dumb, though. She's not using specific mathematical concepts for anything else, why throw that in there?) All that suggests to me that he already existed and used the leverage of what greed already existed in humans to create the positive feedback loop -- maybe that would have been a better phrase for Lucia
-- that made him more powerful and humans more monstrous.
And the people "implored Althena to rescue them." While I don't know how literal a translation that is, it's interesting that the term "rescue" is used rather than "save" -- it suggests to me that they didn't normally rely on Althena to help them, and thus that she may not have been
their goddess at that time. Note that it was only after some untold length of time on Lunar that she felt that humans were too dependent on her (in SSS continuity); they clearly were not that dependent on her previously. This also suggests to me that the burden of rescuing and guiding them is one she took on because she was asked to, not because it was her reason for being. If she could remember a time when they governed themselves, that might make her more inclined to think they could do it again... not to mention just plain being tired of being a nursemaid all those years. Actually, this line of thought makes SSS's version somewhat acceptable for the first time.