Dave's review

Title: A Lovely Shade of Gray
Chapter: 1
Author: SBEdwards
Plot: An ageless professor/demon hunter encounters a demon in his class...
Style & Voice: First person. The style is one in which the character is speaking to the reader in a conversational tone.
Referencing: No problems yet
Scene/Setting: There is a lot of exposition in this first chapter. I would prefer it if you dove fully into the scene. Let us know what is going on through all five senses, and avoid telling the reader what is going on. We don't need to start out being told exactly who the character is and what he does. We can learn about this as the story unfolds. You will see my comments below.
Characters: You have done an excellent job sketching out this character and it is clear that you know the character well. But the reader will relate to the character better the more we see him in action.
Grammar: I didn't focus much here.
Just My Personal Opinion:
My comments are those of a barely published author. So take them only if they are helpful. My main comment is the classic line of :”show rather than tell.” I think these comments will make sense as you read them below.

I do like the conversational tone you have going here, but I think it would work even better if you kept the narration grounded in the scene and avoided exposition.

I hope these comments are helpful:

The first frost of the year crisped the grass beneath my feet as I took a shortcut across the Quad. Another new campus, yet I’d already mapped out the quickest routes to where I needed to go. My office was located in Commonwealth less than a hundred yards from the faculty parking lot. I pulled my jacket together to ward off the early morning chill and hopped onto the sidewalk, the staccato of my heeled boots replacing the crunch of the grass.

(There is nothing wrong with this paragraph – except as an introduction. The first 250 words of a novel should grab the reader with some interesting hook. Maybe it shoudn't be that way. But everyone tells me that's what agents and publishers are looking for. I've also been told to stay away from weather because so many stories open that way.)

Classes at eight in the morning are cruel and unusual punishment, but when you move around as much as I do tenure and plum class times always remain elusive. I go where my job takes me. My real job. I’m a Discerner. In other words, I’m a demon hunter and I’m good at my job. I should be. I’ve been doing it for sixty years. I am ninety-three years old.

(This second paragraph is straight exposition. Is there a way you can get this information across without directly telling it to the reader? My rule is that I can only write either what the point of view character perceives or would be thinking at the time. They can't describe who they are because people don't normally do that. It has to come up as organic to the scene)

Pulling on the glass door, I catch my reflection. The same reflection I’d found staring back at me since the day my gift had manifested. My thirty-third year. The same age as Jesus Christ when he had been crucified. It manifests in all Discerners at that age. Thirty-three seemed to be the magic number. (So this is great stuff for character development. You as the author need to know all of this. But you can't just tell it to the reader. Think about the big thing that is going to happen to the character. Is he or she going to be attacked by a demon? Will he realize that his girlfriend is actually a succubus? What ever the pivotal point of the story is, that is likely the beginning of your novel. If you start right at that moment, you will be able to hook your reader. You can then let this information out as the story unfolds and as part of each scene)

“Good morning,” I replied with a manufactured smile. He towered over me by almost a foot, slim, clean cut and well-bred. He’s the type to sit up front and ask lots of intelligent questions. A suck up. I like suck ups. They make me feel better about myself. (This is good. There is exposition here, sure. But it is part of what the character might be thinking at that moment)

Typical lecture. I talked and they either fell asleep or stared off into space, their eyes covered in the glaze of the dead. On my last sip of coffee and rounding on category number four, “Dogmatic Theology” I noticed him. In a class this large any other professor would have assumed he was a late comer. I knew better. (I think this is where you story begins. You could have the character plodding through the lecture and notice the demon. This is a good hook. Everything before has just been build up and you can get it across later. There are several good books that make this point. Orson Scott Card has an excellent book on writing fantasy and science fiction that makes these points much better than I do.)

Thanks for the chance to read your work,

Dave