That's… Klein's eyes reflected a nearly transparent object.
It appeared like a carapace of something, occasionally shrinking and vanishing from Klein's line of sight, and at times peeking out due to an invisible wind, revealing some of its outlines.
With it acting as an anchor point and looking further up, there were colors of green that was almost black, standing there silently.
They look like the colors of the trees of a dark forest… Klein mumbled without imagining what the object of those colors signified. All he could do was boldly guess that it had something to do with gaining a deeper control of the mysterious space above the gray fog.
Without trying to do something that was destined to be in vain, he jumped down from the staircase that seemed to lead to heaven and phased back inside the palace.