I Heard I'm Going to Save the World

It turned out that I suffered from demon body, origin stone disease, Pamish infection, rainstorm syndrome, vocal cord infection, collapse syndrome, abstraction, money infection, radiation infection, cyberpsychosis, fear gas inhalation, homesickness, urban disease, distortion, slow shock, zombie transformation, anentropy, witch transformation, madness, Honkai disease, loss of control of extraordinary beings, hypothermia, Kara bacteria, and contact phobia. After reading this novel, all these diseases were cured