The blood war between Soul Reapers and Quincies has finally begun. News of the sudden attack by the Quincies reaches Ichigo, propelling him to join the battle. However, the Soul Reapers are slaughtered one after another by the invaders, led by Yhwach, the father of all Quincies. Meanwhile, Uryu uncovers the truth hidden in his grandfather's diary and comes to understand his purpose in this world. The battle enters a new phase as Yhwach names his successor, stirring controversy among his subjects. The time of separation looms in the air as darkness shrouds the Soul Society!