I think the /2 means Roxas's two hearts, His and Sora's. But I guess we won't know until the game comes out... But for now let's continue making random statements! : D
I don't really care because I don't like the fact that you have two disney mascots following you around. But what I would really like is if they were smexy humans. Yes that would be nice!
What I think is that since Namine and Roxas were both born from people who have a special trait it had an effect on them too. So therefore it resulted in Namine and Roxas having emotions and since Roxas had emotions it rubbed off on Axel a bit causing him to feel like he has a heart. Also this explains why Namine has her ability to fiddle with peoples memories.
