When the Quincy killed Hollows and Soul Reapers, the energy of those souls flowed ceaselessly through the imprints to Yhwach.
Yhwach grew stronger and stronger, and established the Light Empire.
Because the Quincy completely erased souls when they destroyed Hollows, their methods ran counter to the Soul Reapers' practice of purifying souls and sending them into the cycle of reincarnation. Repeated negotiations by the Soul Reapers thus ended in failure.
During this period, Yhwach learned about the Soul King, and afterward proclaimed himself the Soul King's son.
He felt sympathy and pity for the imprisoned, tormented Soul King, and decided to kill him.
Using the Soul King's power, the monk discovered this intention, and also saw Yhwach's tremendous potential.
To nip that threat in the bud, the monk sent word to Yhwach that he was willing to negotiate with him.
Wanting to see the Soul King with his own eyes, Yhwach agreed and traveled alone to the Soul King Palace.
The Soul King himself was a blind spot for the Almighty-Yhwach's eyes could see through every future, but could not see through the Soul King.
Thus, the monk used the Soul King's left arm to ambush Yhwach and seal his eyes, preventing him from activating the Almighty.
Enraged, Yhwach led the Light Empire's army into the Soul Society and went to war with the First Gotei 13.
Just as everyone waited with their necks craned in anticipation, the Sky Curtain ended.
"Fuck, why does it keep doing this?"
"I wanted to see the fighting! All we saw before was the Soul King killing people in an instant and the Five Great Noble Houses ambushing him. The other battles barely got any coverage either. Why stop before the fight here?"
"One day, when I become a big shot, I'm definitely going