I Have A Sickness [World-hopping]

Alternative title: 我有病[快穿] --- System, "You have a sickness. Moreover, you'll have one in every world." Hao Ritian, "..." System, "What's wrong? Is there a problem?" Hao Ritian smiled, "No, there's no problem. I was just a bit excited." System, "..." That smile intensified the system's feeling of ominous foreboding. I...