WORLDWALKER can and probably will touch on some heavy stuff at times thanks to my writing style, so I've compiled a list of what could potentially be upsetting here. This will be updated as the story goes along.
While reading, you may occasionally encounter a button with the label SKIP, which lets you skip pages with particularly distressing content. It also takes you to a summary of the skipped page.
Additionally, if you really want to avoid some of the content mentioned here, there is an option to see which page numbers the warned content will appear in, with a summary for the contents in the page.
No warning is perfect though, so if you encounter something that upsets you, please skip the page or refrain from reading WORLDWALKER entirely if necessary. Take care of yourself, OK?