This is absolutely insane. The plague?! They really can't catch a break.
I would have been fine with just seeing how they'll manage to survive in the middle of that desert, but man, so much unreal stuff just keeps happening to them.
Oh no! That is not good. Then those classmates(in the previous chapter) who cleaned Hashimoto's excrement might have gotten contaminated too! No wonder their faces weren't shown. So that we will be intrigued who those were!