Sorry if this comes off as rude but it's wild to me that you think most of this group would ever come close to suicide when most of them have lost family members and are still going strong. The closest one to suicide is Niki and it'd still take a lot for her to crumble.
The kill someone list is also inaccurate, Yasu doesn't kill because her religion doesn't allow it (she avoided kyudo club with Touka), Ayane, Chika and Touka are very kind and wouldn't kill unless it's a world wide threat or something like that.
Maya is a wildcard, her motives are not very clear but if she didn't kill Noriko even if there's a chance Sensei might lose all memories then she probably wouldn't kill anyone.
Tsuneyo would kill for righteous reasons, she almost killed Sensei.
Nodoka wouldn't kill anyone with her current motives and I think she prefers psychological damage
Psycho Ami definitely kills.
There are worst things than losing family members. They all had something/someone else to live for, otherwise they wouldn't be here. Still, those are just those I consider potential possibilities. Not guarantees.
I did say Psycho Yasu. Not just Yasu. If a god changes her, it doesn't matter what she normally thinks. Also Ayane has murdered like 4 janitors on accident. Still, Ayane, Chika, and Touka haven't had a reason to kill yet. (Well, Ayane somewhat does but it remains to be seen if she actually would.) Again just potential possibilities. Maya knows killing is fruitless, so killing Noriko wouldn't do anything. However, she's made it clear she doesn't consider others as real, and is completely fine using others as experiments. I can see both her and Nodoka sacrificing everyone else to get what they want. Nodoka has noted she'd put her self first even over Futaba, hence her fucking Sensei.
Tsuneyo would definitely kill for righteous reasons. If killing everyone else ends up being the righteous option, then well, here comes Gallows Edge.
