In Japan it's a symbol of a temple. The picture above is from a big temple in Asakusa Tokyo and the symbol is used to indicate temples. I have to admit it is a bit funny for a westerner. I'd think it is a bit risky to have swastika in a game illustration in the west due to the common nazi...
That actually gave me an interesting idea. What if there really was this guy who is not only been around since the Primordial War, but has actually chickened out of it. He thought that there would be no way to win the war and ran and has been living in isolation ever since. Even if he doesn't...