Cell Infected Person

I went on a spring outing with my class, but was abandoned by my classmates. In the disaster-hit Bei'an City, after escaping from death countless times, I found out that I had been infected by a terrible cell parasite... Chen Ji, an ordinary student in the class, after coming to the so-called absolutely safe refuge, met his classmates who had abandoned him. In such a world, is there really any so-called trust?