Secrets of the Erebor Walls...

Kili was one of the dwarves in Thorin Oakenshield's company. The boy was strolling peacefully through the corridors of Erebor. Suddenly, he saw a strange room and entered. It contained portraits of the boy's relatives. Long gone...

And Kili had an older brother. Fili was five years older than him. But that's not important now.

While Kili was looking at the portraits, he felt as if someone was looking at him. The guy felt the cold, but didn’t attach any importance to it at all.

Keely: The portraits are beautiful...

The boy didn't know that his long-dead ancestors were watching him.

Every Durin has blue symbols on his side, chest, or shoulder from birth.