As for how the Prism of Radiant Transformation twisted this part of history, Fu Qian's first thought was of the red, white, and blue colors in that mission.
With the final mission summary at hand, Fu Qian naturally knew the trap hidden behind the seemingly distinct color rotation.
No matter blue or red, upon the second entry, the color was actually no longer the same as the last time.
But everyone, including himself, couldn't identify the change.
Isn't this a distortion at a fundamental level?
Beyond his initial complaint about it being "too bright," crazier changes might have already occurred amidst the dazzling colors of the night.
This is exactly why Fu Qian wanted to show the artificial rainbow.
The reason for particularly troubling Su Gao to see it is simple—her automatic defense capability of "Echo."
Since it's a distortion of the essential nature of the world, it's probably not that easy to notice.
