Arcaian had not thought about the relationship between bacteria, fungi, and diseases. The world had a rather backwards medical development because of the existence of spells. After all, it was unknown whether medicine could cure diseases, but spells certainly could cure them. Since spells were so effective, talented people and powerful organizations naturally studied spells more. Who would take the time to learn medicine?
Arcaian was perhaps the first person in the history of the whole civilization to use spells to assist medical research.
With an accumulation of rich knowledge and an excellent spell-casting ability among high-level casters, Arcaian quickly identified the causes of several common diseases in the lab. He discovered three kinds of bacteria, which he named, "Plague No. 1,""Plague No. 2," and "Plague No. 3." He also discovered four common bacteria that caused diarrhea, and five bacteria that caused fever.
