I have been re-watching SWO from season one the last couple weeks, and since I have season one to Alicization as BD rips, they have chapters for a better watching experience. Since I like chapters, I decided to make them for War of Underworld. If you haven't downloaded the episodes yet, I recommend this torrent. If you have, I am going to upload just the chapter files with a link for the software you need to add them to .mkv video in a few minutes. Enjoy!
Edit: You can find Just the Chapter files Here: https://nyaa.si/view/1281929. You will need a software to add them to the torrent, which you can find a link to in the description.
If I made any mistakes with the with the chapters, let me know and I’ll make a version 2 (I’ll try to keep the same name so you can download it on top of the current file with a forced recheck).