I thought it's not permanent. maybe give a red warning this is permanent and tell player to save to another slot or something. this is a game not real life choice srly. I always have many save for a game that has route or if I see a choice that clearly tell I will miss this if I choose that etc. after I start this game and play until recent update I find this game really linear. it just porn game with puzzle. find clues to advance story. never thought Dev will add some choice that will lock content if you click on it. it's my false to think Dev will never do that. game need to has choice and consequence just like real like I understand that now.
Also after read the thread. it seem Evellyn gone also permanent too. oh well at lease she has no new content.
Many choices lock content. For example, if you tell Thaddius to leave Evelyn alone, you won't see their scenes. You can have 3 branches with Primrose - no love, friends with benefits, girlfriend. Your choices there
lock content.
This is a choice-based multi-branch visual novel. Choices will lock content. Each of these branches is legitimate. Each of them leads to different content. Instead of bitching that the choices you made led to a branch you didn't like, you should understand that there are branches, and if you don't like the one you're on, back up and change something.
As I said before - you can't see everything in 1 playthrough. This is by design.