He Has a Sickness that Needs to be Cured

Xi Ning was punished for something he did. As his punishment, he had to go into different worlds to complete missions, which includes fixing bugs that would cause the plot to shift. His mission targets include [a person that never existed in the original plot], [a supporting character who had suddenly had a breakdown], [the villain who suddenly killed the protagonist], etc. As a punishment for his wrongdoing, he was reborn into… An omega young master who is suffering from [anorexia]. The emperor’s son who has [skin hunger]. A beautiful young vampire with [mania]. A little mermaid with [aphasia] A forest elf suffering from [depression] … System: Host, good luck! You can do it! Xi Nin...