Omg. You have no idea how happy this post made me!
I haven't been to Otakon since 2006-7 ish (such a long time!)
But I'm hoping to go with a couple of friends this 2013.
And I've been itching to cosplay as Kamui but after researching the past Otakon pics I didn't see much Gintama cosplayers ):
But hopefully there will be a few this year?