I don't think that Kwaan thought that Rashek was the hero, he just wanted to prevent alendi from taking the power. To do this, he may very well have told Rashek that he was the hero, and Rashek took on the role.
And, Reaves, Rashek has 1000 years between the ascension and now to learn to read and write. I'm sure he could have managed it quite well. And I think all-knowing is a pretty good style for the lord ruler to write in.
Ah, but since you are the Executor of my Opinions, and me being the Hero of Ages would be an opinion of mine, then therefore, you are automatically bound to agree that I am the Hero.
You can't even give me crap for not "being absent", because I could always just go to class. That way, I would technically be absent and then you'd have to Execute my opinions.
It's kind of ironic, I was actually going to claim the "not absent" bit. Well, since I made up a good portion of the title, I'll simply have to change it to "in the event of his extended absence."
And also, I'm now officially naming Chaos as the executor of my opinions in the event of my absence. Thus, he is required to support my opinions as well as me being required to support his, so we are now in the friendly town of paradox-ville....
...except I can just be absent for a few hours and Chaos will have to support me, because his title is just in the event of my absence, while mine is now in the event of his extended absence. I win.