>>19153528I'm limiting myself to EN since they're the most bullshit:
Mori: likely, due to her conceptual nature and ability to simply decapitate any leaders very quickly
Kiara: possible, but would need to rely on her phoenix form for travel and her revives if she can't survive bunker busters or anything bigger
Gura: probably can't, she can canonically survive the Marianna Trench but she'll probably die to more serious explosives, technically she can just outlive her enemies and call it a day
Ina: likely, but probably unwilling to do so because she'd probably open a box that would be hard to close again
Ame: likely, with her access to infinite Ames and time travel, even if time travel doesn't support retroactive changes she can covertly set things up to win the instant she gets back to "present" time. In any case Ame probably has the easiest time because of her access to infinite resources.
Sana: easily, she can just scale up and crush shit
Fauna: easily, everyone will beg for peace when stepping outside means death. Reminder that plagues and prions and all manner of diseases are part of nature.
Mumei: likely, honestly not sure if it would be considered self-harm or just the natural way of things. In any case, her conceptual identity means that there's no way for her to actually "lose" as long as her civilized opposition exists.
Kronii: easily, same deal as Ame and she's apparently capable of casual retroactive changes.
Bae: likely, honestly not quite sure what she would do (chaotic probability manipulation, making everyone lose through accidents?) but as with Mumei she, at minimum, can't lose.