Board Thread:General Discussion/@comment-26830922-20180315020522

In chapters 45 and 492 of the manga both Rukia and Kajomaru give the same explanation of the balance of souls. Shinigami purify Hollows and send them to the Soul Society in order maintain an equal number of souls circulating between the Soul Society and the World of the Living. When the Quincy initially began destroying hollows it meant souls sent to the Human world were not returned to the Soul Society. This gradually resulted in a buildup of souls in the Human world and a decrease of those in the Soul Society. This tipping of the balance is the justification used for the Quincies' elimination.

However, this explanation does not seem to correlate with what happened in the final arc. The explanation states the Quincy caused a buildup of souls in the Human World. However, in chapter 487 Mayuri states he had 28000 Rukongai residents killed in order to "correct" the soul balance disturbed by the Vandenreich. However, killing them would return those souls to the World of the Living. Wouldn't this just result in an even greater imbalance (even more souls in the Human world)? 