"Getting Serious"

A friend of mine, who reads this blog, suggested I write a serious story, instead of comedy, so I came up with this:

There's a middle-aged man, with advanced kidney disease, who eats lunch at the same restaurant every day, all alone, and never really speaks to anyone there. 

Then, one day he dies from kidney failure. He obviously never comes into the restaurant again and no one cares. I think it's kind of a bildungsroman, a coming of age story.