Stormfall

Unreleased Rain Storm (レインストーム) is a Keyblade wielded by Aqua in Kingdom Hearts Birth by Sleep. It first appeared in Kingdom Hearts II Final Mix, it is obtained after the events in Destiny Island. Oddly, it shares its name with one of Jack Sparrow's exclusive abilities in Kingdom Hearts II.

In Kingdom Hearts II Final Mix, Rain Storm is seen in Xemnas's Chamber of Repose, along with Aqua's armor. Xemnas talked to the armor, addressing them as "friend." The Last Episode scenario of Kingdom Hearts Birth by Sleep shows that Xemnas has had the armor and the Rain Storm in his possession ever since Aqua sacrificed them to free Terra from the Realm of Darkness. They appeared alongside his complete being, Xehanort, in Radiant Garden when he was discovered by Ansem the Wise, Braig, and Dilan. The three took the Keyblade and armor along with them, as Braig carried an unconscious Xehanort.

Design
The Rain Storm Keyblade's guard is circular and somewhat jagged around its edges. The upper half of the guard is black, the center is grey, and the bottom of it is white. The handle is a featureless, grey rod. The shaft of the Keyblade is thin and navy blue in coloration, except for the tip, which is silver. The base of the shaft also sports two diamond-shaped bumps. The Rain Storm's teeth are comprised by a rectangular frame lined with four short, blunt spikes. This frame and the spikes are all navy blue. The teeth also have three silver pieces bent at right angles; two on the inside corners of the frame and one on the inside center of one side. The keychain links and token resemble water drops.