@sylvacoer
the main issue in the first place is that they cannot see
For real though, they probably won't seeing as how Kurokawa has already accepted himself. His struggles at first were trying to reconcile with society as a whole, being cast out due to his visible scar. He is the bridge from the glamorous world of vision to the muddled world that Sora and Yukiko have lived. The closest that we will see Kurokawa be discussed or "appreciated" will be through the comparison between Sora and Kurokawa which will probably happen next chapter.
Kurokawa already has a pretty tight lid on his jar, so I don't think it makes sense plot-wise to delve deeper into his issues that have already been discussed/shared with Yukiko.