Experiment

As soon as Cang Nan finished speaking, he shut his eyes tight and entered a state of meditation as still and sharp as a blade.

Almost at the same moment, Azashiro and Aizen, not far away, immediately sensed an exceptionally conspicuous spiritual pressure erupt within Muken.

Having been steeped in spiritual pressure for so long that his own had long since merged with the Seireitei, Azashiro was instantly startled.

He warily looked around. "What's going on?? Did a Hollow break into Muken??"

At that moment, he sensed a powerful spiritual pressure appearing out of nowhere within Muken. Judging by its intensity...