I’m similar. Definitely way more sluggish and depressed in summer, and my sleep is very poor even if I control the temperature. I enjoy rain and darkness. I prefer night shift. Autumn is my favorite because summer is finally over and it’s the longest time before summer comes again, plus it has the best holidays. I sleep best in winter and I’m more productive, energized, and happy.
But unlike SAD, it’s a lot harder to fix than just getting a sun lamp. I already do sleep in as dark a room as I can get during the day, but it’s never enough. Though the few times I’ve had access to a truly pitch black room to sleep in, it’s been really helpful.
It’s a weird way to be and most people really don’t understand.
As someone who made the other decision, I’ve found most of the litrpg I’ve looked for on zlib. There are definitely a few that aren’t on there, though, and that number increases if you’re reading the latest stuff as it’s released. So depending on your reading habits, it could be plentiful or almost useless. It does work for me, though, and I’d rather donate to a patreon than give Amazon the money.