Grand Espada de la Luz is a more "enlarged" version of the Jeonsul technique Espada de la Luz. Whilst augmented by Redan the user formulates Grand Eléctrica Perla into a sword shape and then the electric sword is flung at the opponent and extends until it hits them. It possesses extreme piercing abilities and is composed of such an incredible amount of Shinsu that it can bypass defences that are usually immune to electrical attacks. Khun Ran first used this technique to defeat Hesse, one of the Ten Bosses of the Name Hunt Station
In the deadly match against another Ten Bosses, Arie Inieta, the exhausted Khun Ran forced himself to take the second Redan and directly used this technique to dealt a final finishing blow. It heavily wounded a dying Inieta.