Story is a theme for PicoCMS. I use it for my personal website (https://danielpullan.co.uk).
In the beginning there was light. Then a whole bunch of stuff happened and an IT Technician from the UK needed a theme for his PicoCMS website. I started off using Magazine but I spent a long time editing the absolute ends of it. Eventually there was nothing left of the original and rather than my theme being a Magazine fork, it just ended up being an entirely new theme. This is where Story came from.
Absolutely! Download the latest release, put it your PicoCMS's /themes folder and edit your config file to set the theme to Story.
Absolutely, let me know!
Letters ruin maths and absolutely not. Magazine has lots of features that I stripped out of Story, you might find it more to your liking, or just fork Magazine and add it yourself.