Violent Generation

The Violent Generation (暴力世代, Bōryoku Sedai) is the term coined by the to refer to the latest generation of  who have come of age. They are Sōsaku Yawarakai's "legacy". Using the Konsōhito he developed, he was able to modify the souls that were about to reincarnate so they would inherit an incredibly violent nature. This was done through the manipulation of their, which would act as the source of their malevolence. As long as one of the souls had not responded to the call of their zanpakutō, they would live normally, but upon unlocking their Shikai they would begin to succumb to their in inherent violent nature.

Not long after Sōsaku's "death", the generation of souls graduated from the and began to infiltrate the, completely unaware of their purpose. The first among them who awakened caused a lot of ruckus and chaos and a lot of them were killed or captured and taken to the for examination. It was there that it was discovered that their sadistic nature was encrypted into their souls intentionally.

It was later revealed that this was Sōsaku's ultimate attempt at bringing down. He realized that as long as there was a Gotei 13 who was willing to defend the established order, it would be near impossible to conquer Soul Society by force. Thus, he decided to bring down the Gotei 13 from within by making the next generation of soldiers one that could only destroy and never defend Soul Society. This forced the Gotei 13 into a dilemma: they couldn't use their powers because they would only destroy Soul Society, but not using them would mean they wouldn't have the strength to defend themselves against organized assaults.

It seems that among the Violent Generation, there is both a "King" and a "Queen", the two strongest Souls which would lead the rest of their kind in the battle for Soul Society's destruction.