Chambers of Repose and Waking

Chamber of Repose
Japanese	眠りの部屋
Romaji	Nemuri no Heya
Game	Kingdom Hearts II Final Mix
World	Radiant Garden

Chamber of Waking
Japanese	目覚めの部屋
Romaji	Mezame no Heya
Game	Kingdom Hearts Birth by Sleep
World	Castle Oblivion

The Chamber of Repose and the Chamber of Waking are mysterious rooms that seem to hold some great importance to Xemnas, due to their connections to his past. Xemnas often sits in the Chamber of Repose in order to regain memories of his past as Terra and Master Xehanort, and seeks the Chamber of Waking in Kingdom Hearts 358/2 Days and Kingdom Hearts II Final Mix.

Story

Kingdom Hearts Birth by Sleep

Following Ventus entering a coma-like state, Aqua transforms the Land of Departure into Castle Oblivion. The throne room of the Land of Departure becomes a chamber that looks very similar to the Chamber of Repose, only instead of Nobody sigils, the room is adorned with Terra's Mark, and the room is noticeably brighter. There is a single, tall throne in the center, where Aqua lays the comatose Ventus.

Between Kingdom Hearts Birth by Sleep & Kingdom Hearts 358/2 Days

Aqua's armor in the Chamber of Repose.

After the apprentices banished Ansem the Wise, but before they became Nobodies, the apprentices created the Chamber of Repose within the Radiant Garden's castle. Xemnas would frequently travel to the room, as if something within it reminded him of his forgotten past.

To enter the chamber, Xemnas would visit Ansem's computer room, insert a data disk into the machine, and type in the password "Another", after which he would type in six more passwords: the original names of the six apprentices.

This would cause a passage to appear below the Heartless Manufactory, which has a long stairway spiraling down to a long hall. Inside this hall are doors electronically locked and bound with chains. At the end of the hall is a room containing a throne for Xemnas to sit on, as well as Aqua's Stormfall and Keyblade Armor. Xemnas would speak to the armor, addressing it as a "friend". Kingdom Hearts II Final Mix

Apparently, Xigbar often eavesdropped on the conversations, and told Zexion that he heard another voice once. Having been there since the beginning and knowing Terra has two close friends, he correctly speculated the Chamber of Waking would contain his other "friend". Kingdom Hearts II Final Mix

Kingdom Hearts 3D: Dream Drop Distance

While Sora is reunited with his Dream Eater friends at Traverse Town, Ventus smiles as he continues his sleep in the chamber.

Other appearances

Kingdom Hearts Re:coded

Though the chamber itself does not appear, in the opening movie of Kingdom Hearts Re:coded, Ventus is briefly seen sleeping in the Chamber of Waking.

A Fragmentary Passage

Ventus is seen mysteriously vanishing from the chamber.