The Japanese version of Kingdom Hearts IV’s leaked Steam achievement list contains story descriptions that are missing from several of the English entries, revealing additional details about the game’s progression. The data remains publicly visible through achievement tracker Exophase after a large number of unreleased Steam achievement lists became accessible through Valve’s API. Square Enix has not officially confirmed the information, so the achievements should still be treated as leaked backend data rather than finalized story details.
Exophase currently lists 50 Kingdom Hearts IV achievements, but many English story entries display internal placeholder strings instead of their full descriptions. Their Japanese counterparts contain readable descriptions, providing considerably more context for the same achievements. This follows the broader Steam achievement leak affecting unreleased games, which exposed data that was apparently intended to remain private.
Among the clearest revelations is that several worlds appear to receive multiple story episodes. The Japanese description for “May the Light Be with You” identifies it as the first episode of the “Galaxy Far, Far Away” world, while “A Heart’s Decision” corresponds to its second episode. The naming strongly reinforces the already apparent Star Wars connection contained in the English achievement list.
The same pattern appears for the worlds seemingly based on Coco and Zootopia. “Into the Marigolds” is described in Japanese as completing episode one of the Land of the Dead, while “For You, Mi Amigo” completes episode two. Similarly, “Key to the City” covers the first episode of Savanna Central and “Make Your Dreams Come True” refers to its second, suggesting that players return to those locations later in the story rather than completing them in a single uninterrupted visit.
Another achievement gives a clearer indication of Sora’s movement between realities. “Homecoming” has no readable English description on Exophase, but its Japanese counterpart states that the player has accomplished a return from Quadratum. Its placement roughly midway through the story-achievement sequence suggests that Sora leaves the setting during the main campaign rather than remaining there until the ending, although achievement order alone cannot establish an exact point in the narrative.
The Japanese list also identifies the Keyblade Graveyard as the location tied to one of the final story achievements. “Another Possibility” is described as completing the Keyblade Graveyard episode and appears immediately before “A New Saga Begins,” which is awarded for seeing the game’s ending. That makes the location appear important to the closing portion of Kingdom Hearts IV, though the achievement data does not establish whether it is literally the game’s final playable world.
Several other locations previously exposed by the English achievement names gain additional context from the Japanese descriptions. The list references Quadratum, the Haunted Mansion, Scala ad Caelum, Toy Box, the Hundred Acre Wood and a location translated as Monochrome Origins, alongside the worlds corresponding to Star Wars, Coco and Zootopia. The original leak has already provided one of the clearest indications yet of Kingdom Hearts IV’s potential world lineup.
One interpretation circulating online claims the Japanese achievements also reveal the identity or name of the final boss as “Kara” or “Cara.” The currently visible Exophase data does not support that claim. The Japanese title corresponding to the English achievement “The Last Name” is “最後に聞いた名前,” which more directly refers to the last name heard, while its description states that the player defeats the person standing in their way at the end. It does not name Kara, the Master of Masters or any other character.
That distinction matters because theories connecting the Master of Masters to Sora have circulated within the Kingdom Hearts community for years. Nothing in the currently visible Japanese achievement text confirms those theories, and attempting to derive a specific final-boss identity from the achievement should therefore be treated as speculation rather than part of the leak itself.
Kingdom Hearts IV remains officially targeted for a late 2027 release, with Square Enix yet to provide a complete breakdown of its worlds or story structure. Until then, the leaked Japanese achievement descriptions offer additional clues about second world visits, Sora’s return from Quadratum and the Keyblade Graveyard’s late-game role, while some of the more dramatic community interpretations go beyond what the backend data actually says.
