This manga lost the apocalyptic vibe with that statement, I can understand if some ideology surfaced due to unfortunate state of the world.
But with this the whole plot comes down to one big question WHY??
that author will badly explain with shitty backstory that weigh heavily on "MUH...
I can't continue past this chapter for now, before you could argue that "people won't believe even if I say the truth" author.
Telling them her story is perfectly fine in this situation
School rumours are lame, overshadowed by its more serious counterpart, life threatening situation.
There are tons of "uncovered truth which had been shouldered by a single person all this time" several times heavier than this
Reminds me of hyouka