The space-swapping ability appeared to have no issues at all; it looked no different from Sasuke's [Amenotejikara].
But if they used dimensional reduction to think of the two spaces as two sheets of paper standing parallel to each other—
Swapping the positions of those two sheets at faster-than-light speed in a three-dimensional world was the same problem Chuanhe now faced.
It was impossible to accomplish in a three-dimensional world. In other words, the ancient Otsutsuki civilization had once even touched upon the fifth-dimensional world. This was not the corresponding time dimension, but another dimension in the conceptual sense of space.
This seemed to be the worst possible answer. Creatures capable of using advanced chakra actually possessed...