S3C83 Highschool Sul

Question about S3C83, when everyone was in Sul's room talking about how Sul broke off some highschool relationships. Was there a side chapter about highschool Sul's conflict? I can't recall at the moment :/.

Other than the Chapter 3 Extra 2 Special (after S3C27), which talks about how she analyzes some people to the point where they dislike her, there isn't a High School Sul chapter. But this conversation is pretty important for us knowing Sul as a character for future chapters (so probably a set up on Soonkki's part).