Zanbanto

The Zanbanto (Literally meaning; "Universe Cutting Blade") is the name that was given to the most powerful ultrasonic combat sword that steel seraph currently as at its disposal. Those who crafted and assembled the zanbanto are confident that it is the single most powerful, lethal, and effective ultrasonic blade that humanity will ever see for the foreseeably future, specifically its designer, Kenichi Shoma, a legendary swordsmith blade builder who considers the zanbanto his lifes work, crafted specifically for steel seraphs leader to use as his personal sword.