Editing Kingdom Key D

  |get=Choose "I won't give up!" when knocked out.

  |ability1=[[Defender]]

  |ability1=[[Defender]]

  |ability1=[[Defender]]

  |ability1=[[Defender]]

The '''Kingdom Key D''', also known as the {{nihongo|"'''Kingdom Key -Dark Side-'''"<ref>[http://www.square-enix-shop.com/catalog/ma-ds.html SQUARE ENIX PRODUCT Online Catalog]</ref><ref>[https://store.na.square-enix.com/product/418932/kingdom-hearts-keyblade-keychain-kingdom-key-dark-side <nowiki>KINGDOM HEARTS KEYBLADE KEYCHAIN [KINGDOM KEY DARK SIDE] | Square Enix Online Store</nowiki>]</ref><ref>[http://store.jp.square-enix.com/item/MKH051225_1.html KINGDOM HEARTS　キーブレードキーホルダー　キングダムチェーン ダークサイド｜スクウェア・エニックス e-STORE | スクウェア・エニックス e-STORE]</ref>|キングダムチェーン ダークサイド|Kingudamu Chēn Dākusaido|lit. "Kingdom Chain Darkside"}}, is the default form for [[Mickey Mouse|Mickey's]] [[Keyblade]], introduced in  ''{{c|Kingdom Hearts|game}}''. It is a Keyblade of the [[Realm of Darkness]] and the dark counterpart of [[Kingdom Key|Sora's Keyblade]] from the [[Realm of Light]].<ref>'''''[[Director's Secret Report XIII]]''''', p. 28; '''Tetsuya Nomura''': "In order to work, the door needs to be closed from both the Dark side and the Light side and both a Dark and Light realm Keyblade are needed. The King needed a Keyblade opposite from the realm of Light Keyblade that Sora had, so he went to the realm of Darkness to obtain one."</ref> In ''Kingdom Hearts 358/2 Days'', it can be upgraded to the '''Kingdom Key D+''', the '''Kingdom Key D++''', and the '''Kingdom Key DΩ'''.

In ''[[Kingdom Hearts Birth by Sleep]]'', the {{nihongo|"[[Removed content#Lightseeker|Lightseeker]]"|ライトシーカー|Raitoshīkā}} was originally intended to be a Keychain for Ventus, and although it is not available in the final game, the data for the Keyblade's icon and stats remains within the game's code. If equipped through the use of a cheating device, it grants Ventus +3 Strength and +2 Magic. The Keyblade's model is present in gameplay when equipped in the original Japanese release of ''Kingdom Hearts Birth by Sleep'', but the model is removed in later releases of the game.

In ''Kingdom Hearts 3D: Dream Drop Distance'', the Kingdom Key D is listed as one of [[Riku]]'s [[Keyblade]]s in the game files, though it is unusable in normal gameplay. Like every other equippable Keyblade in the game, it changes appearance when visiting [[The Grid]], taking on a black, grey, and light blue coloration.

[[Mickey]] enters the Realm of Darkness in search of the dark counterpart of Sora's [[Kingdom Key]] in order to help Sora seal the [[Door to Darkness]]. After teaming up with [[Aqua]], Mickey realizes that since Sora acquired his Keyblade in the [[Destiny Islands]], its counterpart has to be located in the remains of the Islands. Eventually, Mickey finds the Kingdom Key D behind a door<!--does secret place door have a name?--> in the [[Depths of Darkness]],{{storylink|Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage-}} then uses it to slay a troop of encroaching [[Darkside]]s and seal the Door to Darkness.

Upon Sora's awakening, Mickey continues to wield the Kingdom Key D on his mission to restore the light. Upon [[Xemnas]]'s defeat, Mickey does not use the Kingdom Key D again for some time, switching back to the Star Seeker.

In ''Kingdom Hearts 358/2 Days'' [[Mission Mode]], the Kingdom Key D is King Mickey's default Keyblade, and does not require gears to be equipped. The ground combo consists of a diagonal upward slash from the right leg, followed by the same slash from the left leg, and finishes with a 360° spinning slash. The aerial combo is exactly the same as when he uses the Star Seeker Keyblade, consisting of a horizontal slash to the right finishing with a vertical slash upward, followed by the upward slash leading into a 360° spin with the Keyblade held above the King's head, and ends with a series of three thrusts as he descends.

===''Another side, Another story...''===

The Kingdom Key D appears in the secret movie ''[[Another side, Another story...]]'', where it is wielded by Mickey during his brief appearance.

===''The Gathering''===

The Kingdom Key D also appears in the secret movie ''[[The Gathering]]'', where it is pulled from the ground by [[Aqua]] at the [[Keyblade Graveyard]].

File:Kingdom Key D (HT) KHII.png|The Kingdom Key D as it appears in Halloween Town in ''Kingdom Hearts Re:Chain of Memories''.

File:Light Seeker KHBBS.png|The Lightseeker from ''Kingdom Hearts Birth by Sleep''.

File:Kingdom Key D KH3D.png|The Kingdom Key D as it appears in ''Kingdom Hearts 3D: Dream Drop Distance''.