Retsu Unohana still remembered how, under Captain-Commander Yamamoto's power, all moisture in the Seireitei had completely evaporated.
That blazing spiritual pressure had made one feel as though they had fallen into a furnace.
Back then, the sky over the Seireitei had been red.
Everything else had been gray.
Unohana even felt that if Yhwach, leader of the Light Empire, had held out a while longer back then, even if the Seireitei had not been destroyed by the Light Empire's Quincy, it would have been destroyed by Captain-Commander Yamamoto.
Make no mistake: Captain-Commander Yamamoto of a thousand years ago had still been the leader of a band of killers.
To achieve his goals, he had possessed the resolve to destroy everything.
It could be said that so long as he could kill Yhwach, Captain-Commander Yamamoto would not have hesitated in the slightest even if it meant destroying the Seireitei.
Unohana Yachiru had also been an unparalleled villain a thousand years ago, someone who only enjoyed the thrill of slaughter. If Genryūsai Shigekuni Yamamoto had not possessed absolutely overwhelming strength, how could she possibly have submitted to Captain-Commander Yamamoto and become the captain of the Gotei 13's Eleventh Division?
For Unohana Yachiru, only absolute strength could make her submit.
By now, Unohana Yachiru had become Retsu Unohana.
Yet the awe she felt for Genryūsai Shigekuni Yamamoto had not faded. Instead, as her own strength grew, so did her reverence for him.
Now, hearing Ailin say that Rukia might one day possess strength comparable to Captain-Commander Yamamoto's, Retsu Unohana could not help but be astonished.
However, based on the abilities Rukia had just displayed, Retsu Unohana had to admit that if Rukia's spiritual pressure rose further, then with Sode no Shirayuki's abilities, she truly might reach Captain-Commander Yamamoto's level.
It was only that