Kingdom Hearts Union χ

Kingdom Hearts Union χ, stylized as Kingdom Hearts Union χ[Cross], is a Kingdom Hearts game exclusive to the iOS and Android smartphone platforms. It is a sequel/update to Kingdom Hearts Unchained χ and a continuation of the story started in Kingdom Hearts χ.

Story
After being saved by Ephemer and Skuld following the conclusion of the Keyblade War, the Player is brought to another realm, where the Dandelions have assembled as per Ava's instructions. Upon entering this new realm, however, the Player and the Dandelions loses all memories of the past world, with the exception of the five wielders chosen to become the new Union leaders.

Following Ava's orders, Ephemer ventures to the the Keyblade Graveyard as one of the new Union Leaders. Soon, Ephemer is joined by Skuld, the second of the new Union Leaders, much to his surprise. When Skuld questions the whereabouts of other three Union Leaders could be, Ephemer admits that, before Skuld showed up, he did not have much faith in what Ava had said, so he is unaware if the other three Union leaders are coming. Ventus, the third Union Leader, arrives and Ephemer and Skuld welcome him. While waiting for the fourth Union leader to appear, Ephemer and Skuld bond with Ventus, who is bewildered as to why he was chosen to become one of the new Union Leaders. Ven admits that he is a little jealous over Ephemer and Skuld's friendship, though they assure him that they consider him a friend as well. Amused by the concept of friends, the fourth Union Leader appears and introduces himself as Blaine. When Ephemer confirms that Blaine is not the last to arrive as he had anticipated, Blaine asks if Ephemer is meant to be their leader. Ephemer denies this, feeling as though they should wait until all of them are together to decide something like that. Blaine then asks if the rules Ava provided are meant to be absolute as he has issue with the concept of lying to the Dandelions, something which Ventus relates to. Thinking about the pain that the Player had endured because of the Keyblade War, Ephemer firmly states that they are to follow the rules and that the truth about the previous world must remain a secret so that no one has to remember the tragedy of the Keyblade War. Blaine, Ven, and Skuld all accept this, stating that they all believe in Ephemer. Together, the four new Union Leaders await the arrival of their final comrade.

The Player resumes the undertaking of their missions, traveling to a new world in the form of the Castle of Dreams, while also joining a small party of Keyblade wielders with whom they grow to frequently enact missions alongside. After a while, the Player has a nightmare in which they see themselves collapsed after the events of the Keyblade War. Furthermore, the Player relives their battle with Aced in the Fountain Square when he attempted to separate two quarreling Keyblade wielders. Upon their defeat by Aced's hand, Player is jolted awake and Chirithy, concerned of frequency of the Player's nightmares, advises them to rest. As the Player accepts this and warily returns to sleep, Chirithy bids them goodnight and continues to watch over them.

As the Player continues their missions, Ava chooses Strelitzia, a lonely young girl who has been watching the Player over the past years, to be the fifth Union Leader. While reflecting over her new role, Strelitzia realizes that the Player is not a Dandelion and rushes to recruit them into the Dandelions. She wanders into an abandoned house and is ambushed by an unseen member who steals her book. Before passing away, Strelitzia laments not getting to know the Player. Sometime later, Ephemer, Skuld, Ven, and Blaine encounter Lauriam, a young man who claims to be the fifth Union Leader.

Gameplay

 * The game retains the gameplay found in Unchained χ, and all in-game data will be carried over.
 * Multiplayer is introduced. Players will be able to team up with up to five members of their Party and tackle special Quests together.