Takamagahara Shrine (Japanese: 高天原廟, "Takamagaharabyō" / lit. "Plain of High Heaven's Shrine") is a midgame section of the ruins. A remnant of the 1st Children, the Kotoamatsu, are sealed here. The area has a distinct Japanese theme.
Break the floor with your Knife or Katana, then place a weight on the dais under the non-moving white platform. Run to the little hole in the left, because the white platform will try to crush you!
Use the right-most moving platform to crouch-walk through the invisible wall toward the Life Seal and break it. Then, warp back to the Grail Tablet and use the 2nd moving platform from the left to walk through the left wall to get to the chest.
First, break the Birth Sigil by traversing the room to the right. Afterwards, a dais should appear. Use Shurikens from the top left of the room to destroy the wall without triggering the death trap. Then, equip the Gale Fibula to dash past without getting squished. Place a weight on the dais.
Bring Key Fairy Herja with you to (B-4), destroying the wall to the left from (C-4), then use the Katana to break the walls to get to the Life Seal she reveals, and to get to the chest, too.
Amenowakahiko's departed wife finds her husband after death.
Or rather, a beast of destruction from the Underworld does in her form.
A beast that dwells beyond the false gate.
C-26th Child: Alfr
This is Takamagahara Shrine.
A land buried by the walls of those who have closed their hearts off to others.
C-21st Child: Kotoamatsu
From the foot of the wall, toward the sigil.
D-21st Child: Kotoamatsu
Daji, the wielder of the nine tails.
The time during which you may do battle is limited.
Daji waits in the Execution Room.
D-31st Child: Anunnaki
Brahma asked Chaos, "What is creation?" Chaos responded only by existing.
"Creation is simply floating in the purple darkness."
D-31st Child: Kotoamatsu
The significant mechanism imparted by the Sky People is operated by trifling
power. That of the Ancient Cog.
Hold it up to a hole carved into a wall.
B-46th Child: Vanir
In Valhalla are 12 thrones worthy of lords.
But there is only one throne for the true lord.
There the Vanir's hidden relic, the Knowledge from the Sky sleeps.
F-33rd Child: Olympian
Where is this?
C-43rd Child: Olympian
The labyrinth of the winged.
Wherin the Celestial Disk is housed.
A response will be given to the word that represents Heaven.
C-53rd Child: Olympian
The Olympian Guardian, the Griffin.
Overcome the falling Griffin statue and disrupt the ring.
D-51st Child: Anunnaki
Satya Yuga is the gold age.
When all virtue is overflowing.
C-61st Child: Anunnaki
Daji hides the Egg of Creation.
The god of creation Brahma's dialogues on the nature of creation.
The sight of the egg will stir recollection.
And the god will speak again.
D-61st Child: Kotoamatsu
The breath that Takemikazuchi left is ablaze.
Though it will be swept away by proof of the time of creation.
C-71st Child: Anunnaki
The noble Sky People, the Anunnaki.
Diving reckoning will be dealt to those who dare to harm them.
D-71st Child: Kotoamatsu
The nine eyes will not overlook opposition.
They will tolerate standing before the object of your desires, and that alone.