I mean they're already in shock with everything, plus the person willing to sacrifice them got too live would be on my mind more than anything. She sent someone to there death.
But other than that you gotta look at it another way, no one is friends with everyone in there class or on good...
Haruka at the beginning: I'm only helping because I wanna be alone in peace
And now that he has motivation they're trying to forcibly leave him alone, or to be more specific isolated and under constant watch
This could be a good game, the usual smt gameplay but with added resource gathering and base building, have the alignment system be determined by your base, demons, and some other choice. Call it SMT: Eden Rebuilt