Then

Akivili creates the Astral Express on THEIR home planet Pegana, to transport THEMSELF and the Nameless across the cosmos. With the help of the Star Rail, which is used by the Xianzhou and IPC to this day, they connect galaxies and planets together, bringing a new age of prosperity to the world.

One day, Akivili disappears, leaving only a group of the Nameless behind. Eventually, the Astral Express breaks down and falls down on a planet, until Himeko repairs it. Nobody knows what happened to THEM, except, maybe, just maybe, Nous, the Aeon of Erudition.

Now

It is currently unknown if Akivili is alive or not, as Himeko thinks that THEY are dead. Yet, no one knows for sure.