Little idea for sidequest

The Side quest start in the library in the castle of Sacrament and it leads you in a long-forgotten area. The Area that isn’t touched by Humans or the pestilence in a long time. It’s full of wild live and hides many secrets and puzzles. To progress in this area, you must follow an old diary that is written in a forgotten language, found in the library in the Castle of Sacrament. The diary acts much like the instruction book in Tunic. So, it gives you hints for secrets and enemy behaviors. At the end the reason why, the area didn’t get infected is that the nature developed some kind of Antidote against the pestilence. You can take one of them with you and transform normal enemies back. But it can only weaken bosses. Also, the diary belongs to the player now and gets turned into a mix of the Hunter’s Journal from Hollow Knight and the Tunic manual.