The unique world - building in the 'Jujustu Kaisen light novel' is one of its special features. It has a complex and fascinating universe filled with different curses, sorcerers, and their powers.
Well, libraries could be a good place to start. Check with your local library to see if they have the 'Jujustu Kaisen light novel' in their collection. If not, they might be able to order it for you. Another option is to visit specialized anime or manga stores, as they often stock related light novels too.
There was no clear connection between Sanguine Red's novels," Tengen " and " Tengen 1 ", which could form an independent series. However, judging from the name, Tengen could be considered a follow-up to Tengen 1 because Tengen was usually used to refer to the first work in the series. However, this was not absolute, because the name connection did not necessarily mean that there was a direct causality between the works.