Gojo is Gojo satoru, and Xiayou is Geto suguru. I vaguely remember that their last names are opposite, meaning impermanence and heresy (seemingly)
They are two people who match each other very well, both in pronunciation and meaning.
Basically all the settings of the two of them are symmetrical/contrasting/corresponding. The author said that when he drew the painting, he wanted to set the two of them up as completely different people.
Zero volume 5t5 stepped on the other end of the board and was now on the edge of the cliff. Standing in the air under the other end of the board was the leader Jie.
Concept: People who are too gentle bear more things in their hearts