If he waited until Captain Kiryuo Hikifune's research was complete and could completely fuse the created "Temporary Soul" with himself, then the increase in spiritual pressure would be permanent.
However, once Captain Kiryuo Hikifune completed her research, it would probably be time for her promotion to the Royal Guard.
Since the person in the Senkaimon was Captain Ailin, Section Chief Bōshū did not continue paying attention.
After recording this incident in the Dangai, he ignored it.
Boom!
Before Ailin's powerful spiritual pressure, the Gokuto merely slowed for a moment before continuing its charge toward him.
"Looks like my spiritual pressure is still far from enough to shatter the Gokuto."
Ailin shook his head, unconcerned.
He had expected as much. He had only tried it to see how great the gap was between himself and Aizen after he had fused with the Hogyoku.
Drawing his Zanpakuto from his waist, its blade instantly transformed into a violet-black spatial blade.
Then, Ailin swung at the Gokuto, sending a crescent-shaped spatial blade flying toward it.
"Hell-Verse: Moon Fang!"
Boom!
After striking the Gokuto, the crescent-shaped spatial blade instantly transformed into a Hell-Verse roughly ten meters across, completely swallowing the Gokuto.
Not only the Gokuto—even the passage through the Dangai was swallowed wherever the Hell-Verse expanded.
At a glance, it looked as though half the passage had gained a massive pit.
After destroying the Gokuto, Ailin encountered nothing else along the remaining route through the Dangai and safely arrived in the Human World.
"Captain Ailin."
After stepping out of the Senkaimon, a middle-aged Shinigami with an afro quickly appeared before Ailin with Shunpo and bowed.
"Captain Ailin, I am Hideaki Kashiwagi, Eighth Seat of the Thirteenth Division. By Captain Ukitake's order, I have been waiting here for your arrival."
"Mm, Captain Ukitake is considerate."