The Adamantium Alloy Box expanded with the Undetectable Extension Charm was certainly useful, equivalent to having a small world of his own.
But its drawbacks were equally obvious: it was inconvenient to carry, and once it was stolen, everything inside would belong to someone else.
He had actually considered improving it, turning the box into something like a bracelet or ring, like the spatial artifacts from mythological legends.
But in reality, they were fundamentally not the same thing.
The principle of the Undetectable Extension Charm was to enlarge an existing space. Solid objects like bracelets and rings simply had no space inside them, so how could they be expanded?
Even if he hollowed out a little space inside, the difficulty would be considerable, and there would be no way to enter it.
If it were really possible to create spatial equipment from rings or bracelets, Newt, who was proficient in the Undetectable Extension Charm, would not have used a suitcase that was constantly subject to inspection.
But Amenominaka of the Rinne Sharingan was different. Those spaces had been created by the Rinne Sharingan, equivalent to small worlds with different environments, merely without any life born within them yet.
He did not need to carry anything. He could enter them at any time and forcibly bring others inside, and he could also transfer everything in the Adamantium Alloy Box into those spaces.
"Eighty Gods Vacuum Attack!"
As Hawking observed the surrounding environment, Kaguya Otsutsuki and Otsutsuki Isshiki had begun fighting over there as well.
Otsutsuki Isshiki was indeed very powerful, but he was clearly still no match for Kaguya Otsutsuki. After fewer than several exchanges, Kaguya Otsutsuki had beaten him into a severely injured state.
Eighty Gods Vacuum Attack was an ultimate Taijutsu launched through the Rinne Sharingan. It pushed Chakra