One of the people Kairen was especially worried about the whole time he was away from his home was his little nephew, Arian. He'd lost his parents at such a young age and Kairen was the only one he had, yet, Kairen also was gone before he could even buy a house or prepare a proper living environment for the kid.
'How is that kid doing now', was the thing he considered a lot. Not only Kairen, but also Kain who was with him in The Void. However, no matter how much they worried, there was nothing they could do nor any way to hear any news regarding the kid. Thus, Kairen wanted to learn about the kid as soon as he returned to his world.
Fortunately, it wasn't hard to get news about that kid. He'd tossed the question to his brother after Aaron had calmed down, and he received a pretty much satisfying answer.