Alright! I found the link to the discord on the subreddit, and in there I found a post that helped me. Basically the save data is called "save.ito" and is located in .../AppData/Local/wohgame . I transferred the save from PC one to PC two, and everything works as expected! Problem solved :)
I love this game. I am close to finishing the achievements, but I now have a new PC. Is it possible to transfer the save data from one PC to another? I'd love to continue my progress rather than restart from scratch.