What are the badges that Ryou wears?
Here are images of the badges that I believe are clearer (taken from blogsuki.com):


So, what do we see?


A rising Sun, a traditional motif for Japan;
An 'R';
A mask with two colored halves, smiling;
A geometric pattern;
A yellow-green thing that I do not even know what that is;


Apart from the rising Sun, and maybe the 'R' could stand for Ryou, I do not really have an idea of what these symbols would mean.