User blog comment:07610/In the background: Karu's parents?/@comment-5714639-20130621173106

This link works better:

http://www.mangahere.com/manga/07_ghost/c088/11.html

Anyway, that is an interesting theory. I've never considered that the shadowy figures in the background might be Kal's parents, but the fact that there's a male and female adult standing close to each other makes it possible.