|Spoiler Alert: This article/section contains details about future plotlines described in the light novels, not covered in the anime. Do not proceed unless you want to be spoiled. |
The Time Piercing Sword is a bulky, slightly blackened, dark-gray blade that has been meticulously polished, though an infinite amount of old blemishes, faintly remaining over its entire length, glitters in illumination. The guard and grip of the sword are made from the same quality metal as the blade, though, unlike the other Divine Object-class weapons, they lack any splendid decoration.
The sword was originally a «System Clock», a device left by the creators of Underworld as a way to tell time for the residents. Like the mechanical clocks in the real world, the clock consisted of a circle, with 12 numbers arranged around it at equal intervals, and a huge needle that pointed at the numbers. The clock was no ordinary clock, as it was linked to the server's clock, thus in a sense, it created the time in Underworld. The sword was formed from the needle of the clock, thus it retained the original's time altering properties.
Due to the sword's inherited time altering properties, once the «armament full control» art is cast, it allows the user to "slash the future" of the immediate future: the sword's force is conserved in a specific place and is unleashed at a specific time, in the form of a powerful heat haze. Due to the nature of this ability, the user must carefully calculate both the time and the place that his opponent will be standing in at a specific time, otherwise, the strike would miss its intended target.