Hogyoku's Obsession with Yoru Machi

As everyone knew, the Hogyoku possessed self-awareness. The reason it kept evolving was that it wanted to become the most perfect existence, which coincided perfectly with Aizen's desire to stand in the heavens.

Yet because of the Hogyoku's trait of self-evolution, if it wished to become the most perfect existence, the host it sought also had to be the most perfect being.

If the Hogyoku were personified, then its personality would be that of a true perfectionist.

If it believed someone was better and stronger than itself, it would evolve in order to surpass them.

And this perfectionist nature meant that everything it chose had to be the best, including the host it fused with.

The Hogyoku Aizen had created himself was one thing, but before the Hogyoku extracted from Rukia's body was seized by Aizen, it had been in Yoru Machi's possession.

At the time, the Hogyoku had even conveyed its desire to acknowledge Yoru Machi as its master, but Yoru Machi had ultimately rejected it.

At this point, the answer was already clear.

The reason the two Hogyoku within Aizen's body were fusing so slowly was because one of them believed Aizen was not the finest host. Yagami Yoru Castle was its ideal host, so it rejected Aizen's fusion with the other Hogyoku.

Because the self-aware Hogyoku believed fusing with Yoru Machi would allow it to evolve into something even more perfect, it resisted.

When they learned the cause and result, Aizen and Urahara Kisuke wore very different expressions.

Urahara Kisuke struggled to hold back his laughter, because this outcome had truly taken him by surprise.

Besides, just a few days ago, Aizen had shamelessly declared that the Hogyoku was ultimately nothing more than power, and that he, Aizen, was the one who wielded that power.

Yet the