The space cube was a treasure Ethan found in the 3rd dimensional level of the Origin Dimension.
And then it recognized him as master after a while.
It didn't have any other function other than storing, though it could store trillions of people.
But Ethan thought it wouldn't be much helpful for him.
So he never tried to search its background properly.
But now that he thought about it, this treasure had surely a supreme background.
"Hey Nini, can you become even more powerful?" Ethan asked curiously.
"Yes master. I am just 1 percent fixed till now and that number is also not sure. I think I am missing a major part of myself."
"Is that so? Then what do you need to become powerful?"
"Master, I need world source energy," Nini replied slowly.
"World source energy? Isn't it the energy that runs the entire world? If I want to collect it, I'll have to destroy them, right?" Ethan was unsure what to do.
