After leaving the First Division, Ailin stroked his chin.
Captain-Commander Yamamoto had practically handed him a pillow just as he was getting sleepy.
He coveted the King's Seal's power too!
Unlimited Blade Works contained the elements of every "sword," but if Ailin wanted to draw upon those elements to forge swords, he first had to understand them.
The deeper Ailin's understanding of an element, the stronger the abilities of the swords forged using it would naturally be.
So far, Ailin had gained an extremely profound understanding of lightning, fire, wind, water, light, and earth, using them to create many powerful Zanpakuto.
However, because Ailin had yet to encounter a Zanpakuto with "time-space" abilities, he did not know much about the elements of "time" and "space."
Even Avalon had only been created after Ailin analyzed the spatial structure of the Anti-Membrane.
The King's Seal was a Divine Artifact capable of controlling space in Soul Society. If he could obtain it and analyze the spatial power within it, Ailin would be able to create many weapons possessing spatial power.
With that in mind, after returning to the Kuchiki Clan estate, Ailin did not go to Haruko. Instead, he headed to the training grounds and used Blade Zen to enter his Inner World once more.
The fiery-red sky and the slowly rotating giant gears formed the boundaries of Unlimited Blade Works.
Standing atop Sword Hill, Ailin beckoned with one hand. At once, a Zanpakuto with an enchanting purple hilt flew into his grasp.
Raising the Zanpakuto high, Ailin called its name.
"Whisper, Muramasa!"
Boom!
A massive spiritual pressure burst from Ailin and flowed into the Zanpakuto in his hand. Then, through its blade, it transformed into waves of purple ripples that instantly swept through the entire space of Unlimited Blade Works.
"Bzzzzzz..."