早在“开拓”星神阿基维利巡弋星海的古老岁月之前，人们已经将视线投入天穹之上的浩瀚银河。怀揣着对未知的无尽好奇，无数文明开始了星际探索之旅。但无一例外地，他们的尝试均以失败作结。

在天才俱乐部#1赞达尔·壹·桑原的“虚数之树”理论中：宇宙中充盈着神秘莫测的虚数能量。虚数将一个又一个星系隔绝，即使光在这种能量之中也寸步难行。因此，人类对星空的探索，往往只能停留在各自世界的边界，再难深入。同时，赞达尔也提出了一个构想：即若能掌握并运用虚数能量，人们就将掌握宇宙。在很长时间内，这都是一种浪漫化的空想。直到星神的令使出现，使构想成为了现实。

Interstellar Travel (Phenomenon)

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.