GO PRINCESS PRECURE: MORE DRESS-UP KEYS FOUND

The clue to find the three new Keys (not four, but SIX have been revealed) hidden within the campus of Noble Academy was given thus by Prince Kanata:

"Where dreams gather".

The magic mirror showed a map of Noble Academy.

The clue is: "Where dreams gather".

But where can it be?

Our young heroines saw Mrs. Shirogane, the Mrs. Potts-like chatelaine of the female dorms, enter the surrounding forest with a suspicious golden key hanging on her chest. All three grew suspicious and decided to enter the woods and follow her into territory forbidden to students (so Noble Academy has got a forbidden forest, just like Hogwarts... I wonder what kind of strange beasts will dwell there...):

Though it's fearful,
Though it's deep, though it's dark
And though you may lose the path,
Though you may encounter wolves,
You can't just act,
You have to listen.
you can't just act,
You have to think.

There are always wolves,
There are always spells,

So into the woods you go again,
You have to every now and then.
Into the woods, no telling when,
Be ready for the journey.
Into the woods, but not too fast
or what you wish, you lose at last.
Into the woods, but mind the past.
Into the woods, but mind the future.

The way is dark,
The light is dim,
But now there's you, me, her, and him.
The chances look small,
The choices look grim,
But everything you learn there
Will help when you return there.
The light is getting dimmer...
I think I see a glimmer--

Into the woods--you have to grope,
But that's the way you learn to cope.
Into the woods to find there's hope
Of getting through the journey.
Into the woods, each time you go,
There's more to learn of what you know.
Into the woods, but not too slow...
Into the woods, it's nearing midnight...

To mind, to heed, to find, to think, to teach, to join, to go to the festival!
Into the woods,
Into the woods,
Into the woods,
Then out of the woods...
And happy ever after!

This golden key looks familiar to me as a fan of Ice and Fire...

It implies some connection between Mrs. Shirogane and House Tyrell,

whose matriarch she also resembles.

Is it because Mrs. Shirogane...

-...descends from the Tyrells of Westeros, or is, alternatively, their ancestor?

-...is the Olenna Tyrell of this dimension?

In the forbidden forest, after crossing through an underground tunnel,

the girls found a vast garden teeming with all kinds of flowers,

with a windmill cottage in the middle of it. 

The golden Reach rose around Mrs. Shirogane's neck is the key to the mill,

on whose wall tiles are written the dreams of every student who has graduated from Noble Academy,

including Kirara's mother Stella (dream of being a top model)

and Minami's older brother Wataru (dream of being a worthy heir to the Kaido Corporation).

There is a tradition and a ritual in Noble Academy that every student who graduates must write his

or her dream on the cottage walls, and plant a rose in the surrounding gardens, during their graduation.

This tradition is kept a secret from every student until they graduate:

sub rosa, under the rose (Minami even quoted the expression à propos).

Thus, the Cures had entered the windmill a little too early...

Mrs. Shirogane was not only part of the first batch of students to graduate from Noble Academy,

but also the very first one to write her dream on one of the wall tiles,

and the mill and garden were entrusted to her.

So far, seeing the connection to flowers (especially roses), this mill, 

and gold (in English, her surname would literally be "Whitegold"), 

it appears that Mrs. Shirogane may be the counterpart/descendant of more fairytale characters:

1. The Miller's Daughter (die Müllertochter): the heroine and princess by marriage in "Rumplestiltskin". Married off to a Joffrey-esque royal sociopath and saved by a resourceful imp (is this the Sansa of the Grimmverse? I bet she is!), because her spouse would have her executed if she didn't turn straw into gold. In the end, by guessing the name of the imp, she gets to keep her firstborn son, whom Rumplestilskin demanded as payment for turning that straw into gold, and the love of her husband.
2. The Old Lady Skilled in Magic/Who Could Conjure (den gamle Kone der kunne Trolddom): a neutral character from the Third Story of "The Snow Queen", who maintains a cottage on the riverbank, with a garden that is permanently in springtime/early summer. She lets Gerda rest in her countryside home, yet removes all the memories of her past to keep the heroine by her side, until she sees a red rose on her straw hat and remembers it all.
3. Merryweather, the last Good Fairy (la dernière fée / die zwölfte weise Frau): who softened Maleficent's curse on Aurora in "Sleeping Beauty", turning the alleged eternal sleep into a finite one that could only be reversed with a kiss of true love. Needless to say her strategy succeeded.

Anyway, Mrs. Shirogane suffered the misfortune to have her dream Closed, which led her to nearly devastate her cherished garden while turned into a Desporg. Then, the three newly discovered Keys reacted to the Cures:

The Rose, Ice, and Moon Keys, also known as the Elegant Dress-Up Keys, have finally been found and bestowed upon the Princess Cures (who already had got the Wildflower, Ocean, and Star keys, the ones they use to transform into Cure modes based upon Thumbelina, the Little Mermaid, and Orihime or Vega, respectively):

Rose Key

Owner: Haruka Haruno

Fairytale Princess: Sleeping Beauty Aurora

(her Flora mode is also based upon a plant- or

flower-themed blond princess)

Ice Key

Owner: Minami Kaido

Fairytale Princess: Snow Queen

(her Mermaid mode is also water-related

and based upon Andersen stories)

Moon Key

Owner: Kirara Amanogawa.

Fairytale Princess: Kaguya Nayotake 

(good guess, since her Twinkle mode

is based upon Orihime / Vega

and her princesses appear to be

both Asian [vs. her teammates' European] and sky-related)

I have no idea which kind of third Keys Haruka and Minami will find,

but I sense that Minami's will be cloud- or steam-based

(knowing states of water and Andersen's use of proto-steampunk)...

Kirara's third will be a Sun Key based on Amaterasu...

Anyway, Mrs. Shirogane was purified, and Dyspear is obviously Dyscontented with Close's latest

failure, giving him an ultimatum to Close in on the Princess Cures:

In next episode, the Ice, Moon, and Rose keys will be pitted against a Dyspear-empowered 

Closed-Wing Angel. And I will cover the new transformations and the development of the

First Epic Battle in the series.

So, shall there be some Close quarters combat next week?:

A Close-up of a suicidally empowered Dysdark!

Red eyes!

Larger pointy ears!

Longer hair!

And he's a literal Winged Angel (thanks for the visual pun!)

A new kind of weapons called Crystal Rods has also been found by Prince Kanata in

a remote corner of the Hope Kingdom. 

These are secret heirlooms of the Hope Kingdom's royal household,

without which the Elegant Keys are useless.

New wands and new modes of transformation just in time for real Close quarters combat:

Plus, Shun Imagawa and Naoto Koshiba have joined the credits roster:

Yuki, Reiko, Yui, Kirara, Haruka, Minami, Ayaka, Seira, Shun, and Naoto.

That makes 3 Cures+4 in the Council+3 others = 10 characters.