User blog comment:07610/In the background: Karu's parents?/@comment-5714639-20130621175812

I wonder if that picture means Kal's mother was having an affair? There are two men in the image, and Kal is watching her go to one man over the other. And he mentioned that, where he grew up, there was a love-hate drama.

So maybe rather than sharing a father like I initially thought in one of my other posts, maybe Kal and Millea share the same mother.