Today, March 16th, is technically their birthday XD I just looked at the calendar yesterday like OH NO I FORGOT. But then I did this really fast, so it's ok XD Janon's birthday was the 5th of this month....and I did a piece of him earlier....but who cares? XD

Left is Ryo, right is Leo. Ryo is the lesser educated one and more likely to commit acts of violence and act on emotion and impulse. Ryo has some interest in books, and learning, but this primarily stems from his time with Elaizar.
Leo is compassionate, but rational. He takes a mature role and is often Ryo's voice of reason when they were young. Leo is a pacifist and is interested in books and reading. He's modest and sincere but this often gets him bullied by his brothers and friends.

I imagine Leo trying to tell Ryo about an interesting book he's reading or trying to explain something, but Ryo just does not care XD