Chapter 21 of Clean Slate is now published. I was planning two more chapters, the second chapter concluding the story, but today I had the idea for an epilogue chapter as well.
And as of this writing, this story is #11 on the Top Rated chart and has the highest number of upvotes without a downvote. Thanks, everypony!
(I recognize I may be jinxing myself by mentioning the rating.)
This story has been fun, but I'm eager to write one of the many other story ideas I have.