all of them would look back on the ritual very differently, but in general it's a shared trauma they will deal with literally forever... i think taehyun in particular will always need the kind of over-the-top validation and support that he seeks constantly from his bfs as a sort of reminder that they are never going to hurt him the way the demon hurt him... yj i can imagine evolving into kind of a fierce gatekeeper of all his bfs to try to keep out any future pain in a way that might be slightly stifling... kai forces down all of his pain and trauma and then it bursts out in acute panic attacks that only yj can help with.... soobin struggles with the guilt of what he feels he did to the others forever... and i think bg, aside from really needing to work hard to reframe what happened in the final ritual as heroic instead of sadistic, probably actually deals with a weird backwards kind of stress about having largely been out of it? kind of a survivor's guilt? knowing he WASN'T there for most of this horrible thing that all the rest of them had to survive, and that he'll never really share that experience with them.... i would imagine that over the years that's a weird burden for him to carry with him, something that the others would all be like beomgyu trust us you do not want to have this shared history but something inside him worries that maybe they actually secretly begrudge him that... i dunno. Would be interesting to do an antichrist many years later fic but i dont want to complicate their happiness right now hahaha thank you for this lovely question!