You know, it surprised me about Neko-chan. In all the other versions she's like the only other real main character besides.
Does that happen to her in the manga?
Also, I obtained some scans of the old manga, but...they're weird. Does anyone want them? They're tiny, poor quality, have no title pages, and I'm not even sure if they're whole volumes, but...they're old and they're Kitaro.