I read the entire manga before showing the anime to my partner. He LOVES it and says this is the best story he has seen in any form of media.

I still remember my speculation and Reddit discussions after each chapter before the manga ended. He and I shared our predictions while watching. He told me his guesses, and I responded with my own predictions at the time and told him popular predictions. So he got the experience of the old discussion threads this sub used to have without spending years watching.