Voidsong

Voidsong is a blade from the Black Series in a brand of sword called the Shi no Uta Swords. It is indestructible and very powerful, just like all the other blades of this caliber.

Powers
As a blade of the Black Series, it hosts a collection of powers. One of such is that it makes the user incredibly stronger at night, being that it is bonded with the night. Another power is that it is completely silent, even when sheathing, hitting things and even makes the user's movements quieter. Voidsong can also perform ranged shadow based attacks that fly towards the enemy that are unblockable but very dodgeable, being they don't travel very fast. And just like all of the other Shi no Uta swords, it is indestructible.