. . . . . . "Key items are not constant in the inventory. For example, the Grav-Con Unit disappears from the player's inventory after it is broken early in the game, while other items such as the Survival Knife, Serah's Tear, and summon eidoliths follow their owners and are removed when said owner is not available in the party."@en . . . . . . . . . . . . . . . . . . "List of Final Fantasy XIII items"@en . . . . . . . . "Key items are not constant in the inventory. For example, the Grav-Con Unit disappears from the player's inventory after it is broken early in the game, while other items such as the Survival Knife, Serah's Tear, and summon eidoliths follow their owners and are removed when said owner is not available in the party."@en . . . . . .