Bottom-tier Character Tomozaki Analysis(8)

First, the Story Created by Kikuchi between リブラ, アルシア and クリスI think this is the most well-planned plot in the novel, which is based on Tomozaki, Hinami and Kikuchi. After finishing reading Volume 7, I thought the story ended and would not be used in the following volumes. However, I notice that 屋久先生 keeps bringing the story back to readers again and again and uses characters in the story to discuss relationships between Tomozaki, Hinami and Kikuchi. I cannot help but wonder, why?