The outbreak of Death Rot Disease coincided with Schwali Sun Knights' massive assault on Nali, and it was the sudden outbreak of the disease at the rear that brought about peace talks with the Gedelin Royal Family.
If not for the sudden outbreak of Death Rot Disease, it's uncertain whether Nali would still exist today. One could say this terrifying epidemic that swept through the Western Continent saved Nali, but cast a fearful shadow over the Sun Country of Schwali.
Its range of transmission and killing power far exceeded any existing weapon. The furthest recorded case even reached the Sardinian Female Country at the southern end of the Northern Realm, causing quite a stir there.