All right, then. Several comments to make on this.

First, you've obviously done your homework as regards spelling and grammar
checks. I couldn't find a single glaring error in the bunch.

Second, if you're having characters sing or recite verse...

I suggest that you type as such
With a new song line
On the next line below.

It reads more smoothly that way
And helps your readers
Recognize cadence
Rhythm
And possibly tune.

Further, putting in line breaks
Dispells the illusion the words are said
In a repetitive, robotic monotone.

If this is the effect you're trying to reach,
Ignore this,
As it means nothing then.

Third, this seems a lot like a side story to another work of fanfiction in
places. Sailor Moon collapses, and she and her friends are apparently fighting
against someone named Set. How? Why? I realize you're trying to focus on Hotaru
here, but there are a few things that desperately need setting up. Most of them
for other characters.

Fourth, I'm honestly creeped out by the Wordsmiths. Again, this may be the
effect you're going for, but I somehow doubt it. The fact that the songs and
poetry they use for expression seem to be nothing more than dialogue is part of
that. Normal people don't talk in showtune lyrics; separating the poetry from
what they're just saying will probably help so far as that goes.

Fifth... why didn't Michiru at least pull out the All-Knowing Mirror when Hotaru
brought her new friend home back in the first installment? I mean, people who
can spellbind with words aren't exactly _normal_ people. Especially given the
impressions they have of Silence.

Sixth... well, I'm calling out on that impression of Silence. It is true that
Silence marks both beginning and end, but the world has already come from
Silence and the next Silence that gets brought to it will mark its end. There is
always a backbeat, as it were... there's even a piece of music called "Three
Minutes and Twenty-Four Seconds" or something of the sort which has a violinist
just sit on stage, doing nothing, for said amount of time. The "music" is the
_background_, the noise of the theater and of the people in it. Hotaru's
Silence, Saturn's Silence, is a means of ending, rather than beginning; of
stopping things that so they do _not_ start again. But, like a forest fire, new
life comes from the destruction. It worked in the Silver Millennium, at least.
But this is not to say that what rises from the ashes, as it were, is going to
be better or purer than what was burned; only different.

Seventh... lordy, but that ending was _surreal_. To say nothing of the fact that
for people concerned with words, the Wordsmiths came off as more than a little
awkward and unlyric.

I like the effect you're going for, honestly I do, but the execution could stand
to be a little bit cleaner.

--G. Falconar

"Hey, junior. What'cha doin' with that overgrown bottle opener?"

"Oh... I'm going to Silence the earth."

"That's nice...

Heh. Kids these days. Give'em one magic artifact and already they're going to
silence the...

SILENCE THE EARTH?!"

(Much later)

"Bring me back my Illusium-236 Ribbonic Glaive Modulator!"

Don't ask. Just don't ask.