The greatest treasure passed down through the royal family of the Kingdom of Altar and the strongest sword in the world of Infinite Dendrogram, surpassing even Superior Arms. Altar appears as a decorated blue crystal sword with beauty beyond human knowledge. Its true form is that of an elemental created by the Smith, one of the previous administrators of the world. You were born qualified to use this sword even if you do not have the Superior Job [Sacred Princess] or [Sacred King].
Altar possesses the ability of Absolute Severance, to cut absolutely everything, from physical objects to energy and even concepts. Individuals cut by this sword cannot heal ever again. In the case of certain immortals, they can only heal by dying and returning.