Karakura Town (Part 2)

"I almost forgot—Aizen was a great scientist too. Truly a role model for our kind."

After recalling how dangerous Aizen was, Shen Fei realized he had overlooked something: in scientific research, Aizen was no less capable than anyone else. Kisuke Urahara had created a Hogyoku, and Aizen had created one as well.

In Shen Fei's mind, Aizen occupied an extremely important position when it came to danger. Even Thanos was not as dangerous as Aizen. In terms of strength, Aizen was certainly inferior to Thanos, but in terms of danger, the two could not be mentioned in the same breath.

"The Hogyoku... come to think of it, it seems somewhat similar to the Philosopher's Stone. Kisuke Urahara's Hogyoku was made from Hollow souls, while Aizen's was made from Shinigami souls. Then could a Hogyoku also be made using human souls? And if all three were combined into one, what would the Hogyoku become?"

Thinking of Kisuke Urahara's and Aizen's Hogyoku, as well as the Philosopher's Stone, Shen Fei's eyes suddenly lit up. Especially after thinking of Kurosaki Ichigo's three bloodlines, he realized it was not impossible.

"What if Quincy souls were used instead? Would the effect be even better? If the goal is merely to create a Hogyoku, Yhwach's soul alone should be enough, right?"

"But that depends on the Hogyoku and the Philosopher's Stone being the same kind of thing. First, I need to obtain a Hogyoku to verify that. Unfortunately, neither Hogyoku will be easy to get."

Kisuke Urahara's Hogyoku was inside Kuchiki Rukia's body. From Aizen's actions, it was clear that extracting it was not easy. Besides, even Aizen had not harmed Rukia in the slightest when he took out the Hogyoku. Shen Fei certainly would not attack her for it.

"The urgent matter now is to