As the release of Kingdom Hearts Unchained X draws closer, the official Japanese website for the mobile game has been updated with a series of System videos outlining the various Disney worlds in the game, the battle system, Keyblade and Medal upgrading, quests and raid battles, and the new Coliseum mode where you can battle Heartless and gain special rewards as well as climb the leaderboards for glory.
Below are the videos from the website thanks to Goldpanner:
We will have translations for them as soon as possible!
Source: Official Japanese Kingdom Hearts Unchained X website, Kingdom Hearts Unchained X[chi] Twitter