Biological Science Research Institute.
Before Zhen lay a black blade. It had the shape of an ordinary katana, but its entire body was pitch-black, giving off a cold, razor-sharp feeling.
"This is the result of all this time," Kabuto said to Zhen.
Every month, the Shinigami of the Soul Society gifted the Empire twenty Asauchi. However, these Zanpakuto had not been put into use immediately. They had instead been stored away for Kabuto's dedicated research.
At first, he had no idea where to begin, but after obtaining some materials that Mayuri Kurotsuchi had secretly sent over, the research finally made progress.
A Zanpakuto was forged with its wielder's own soul as its foundation. Depending on the user, every Zanpakuto possessed different abilities and could undergo two stages of release to greatly enhance its power.
Yet obtaining a Zanpakuto was no easy matter. Oetsu Nimaiya, the Sword God of the Royal Guard, had created the prototype of all Zanpakuto—the Asauchi. Only after its owner imprinted it with their own spirit and conviction would it become their one and only Zanpakuto.
The existence of Asauchi was a good thing for the Shinigami as a whole, but the instant every Shinigami received one, Ichibe Hyosube would learn the name of their Zanpakuto, as well as its abilities.
That was no good thing for Zhen. How could he possibly allow his own possessions to be controlled by others?
Kabuto said, "The blade's connection has been completely severed. Only now can it be considered a truly ownerless blade."
After Kabuto's modifications, the Asauchi retained only its sole trait of recording its user's soul. Everything else had been removed. At the same time, he intended to add some new concepts, such as allowing it to absorb Natural Energy from the Living World.
Zhen looked thoughtfully at