Okay, let's try this. This is going to be a very free-flowing roleplay. Remember that there are no character sheets, and the objective is to keep your posts to around a paragraph. I'm not the GM in the conventional sense-- you can lead the story as much as I can. Rantzen's Literature is essentially a cooperative writing exercise, where you are given a prompt, and make what you will with it. Your character can be anyone-- I just introduced a tall man with a dark coat and a male patient who is purported to be unable to die. Want to jump into either of them? Go ahead. Adding somebody of your own creation is great, too. Scenes are very collaborative-- you can control anyone or establish anything so long as it makes sense in the universe (which we can presume is Earth). People who seem to be other people's characters are specifically theirs to control, of course, however, and you are to respect their character's right to function in the roleplay. Beyond that, do what you want or what comes to you while writing. Also, people can likely jump in whenever they want, so long as it makes sense. A lot of things are allowed here, but everything must make sense. We're writing this together, guys.