====== Interstellar Travel ======
In the ancient times before Akivili the Trailblaze traversed the starry skies, people were already casting their eyes to the mighty cosmos above their heads. Armed with infinite curiosity towards the unknown, countless civilizations had started space exploration. However, their attempts had all failed.

In the Imaginary Tree theory put forward by Zandar One Kuwabara, 1st member of the Genius Society, the universe is filled with the mysterious Imaginary Energy. Imaginary Energy isolates star clusters from each other and even light cannot pass through it. Therefore, human space exploration is often limited by the boundaries of their individual worlds, unable to advance any further. Zandar also posed a hypothesis that humans would be able to control the universe if we can control and manipulate Imaginary Energy. It was a romantic illusion for a long time, until it was brought into reality by the appearance of the Emanators of Aeons.