It's the first chapter of a made for Kindle manga series. All of the reviews I've seen were people throwing fits about how it was so short and it's like yes that is how comic book chapters work. It's cute and it cost $1. I've paid way more than that for way worse comics.
This can be read in ten minutes. Minimal required Kindle size. Horrible lettering. The same font is not even used consistently. Just a quick short story that doesn't go anywhere.