A vast space.
There's no concept of a first floor or second floor, just an enormous expanse of space.
It's like...
Entering a large mansion that hasn't been decorated or divided into floors.
Looking around, you can see the boundaries of the World Tree's internal space, and looking up, you can see its ceiling.
And this space is astonishingly bright.
And...
Somehow... "lively."
Right now, Xu Xin and the others are roughly in the center of this World Tree's internal space.
And all around them, as far as the eye can see, are hundreds and thousands of alien invaders.
Bodies as black as ink, countless eyes that stir a feeling of anchored dread, and forms in various bizarre shapes.
Some had the Slime type they've seen before, others had bodies so uneven it looked like they were covered in pustules.
There were also those covered entirely in writhing tentacles, each tip of these tentacles with a swaying eye.
...It's like a mass of black slime with giant snail eyes all over it.
