Department of Research and Development, underground space.
The vast area stretched for over a thousand kilometers, with blue skies and white clouds, as if it were a complete world of its own.
This was a creation of Mayuri Kurotsuchi and Seinosuke Yamada, inspired by the underground space beneath Sokyoku Hill.
In Mayuri Kurotsuchi's words, his work was hundreds, even thousands of times better than Kisuke Urahara's.
Upon the endless wasteland, a burly figure rampaged and wreaked havoc. With every movement, rocks shattered and the ground collapsed.
Violent spiritual pressure surged through the space like tidal waves, its crushing weight pressing down on everyone who entered.
Ashido Kanō, a Shinigami capable of killing sub-class Menos in his normal state, was already no weaker than an ordinary captain.
If he went all out, he could even rank in the lower-middle tier among the captains.
With such strength, combined with the Hollowfication buff, his spiritual pressure alone had even reached the peak of Second-Class Spiritual Might.
Even in an unconscious state, he was not someone ordinary people could approach.
At the very least, Mayuri Kurotsuchi and Seinosuke Yamada had no desire to get close to Ashido Kanō in his current state.
Su Feng stood at the entrance, gazing at the berserk figure sealed by multiple layers of Bakudo in the distance. A trace of surprise flashed in his eyes.
"Kanō has held on until now. His willpower is truly impressive."
Su Feng had a fair understanding of the intensity of Mayuri Kurotsuchi and Seinosuke Yamada's research.
If it were him, he probably would not have been able to endure it.
Yet Ashido Kanō had not only endured it—he had endured it for decades.
"This has nothing to do with the experiments, Captain Su Feng!" Mayuri Kurotsuchi spread his hands and shook his head.