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Lea requests to become a Keyblade wielder under Yen Sid in order to help Sora and Riku in their battle against Master Xehanort. Yen Sid accepts, but as they are short of time, has Merlin, Flora, Fauna, and Merryweather suppress the time needed for Lea to train. Lea eventually manages to summon his Keyblade, but does not get the hang of it until after Sora has been rescued from Master Xehanort. Having learned to summon the weapon voluntarily, he playfully vows to become Riku's rival.
The guard of Lea's Keyblade resembles his signature Chakrams, the Eternal Flames, as well as the Bond of Flame Keyblade, with a straight hilt rather than a cross-shaped handle. The blade and teeth take the shape of a translucent streak of yellow-orange flames, resembling those of the Frolic Flame. However, the teeth of Lea's Keyblade form the shape of a hook, rather than a closed loop. The Keyblade's chain links resemble Lea's Chakrams; the token also resembles a pure silver version of the weapons.