Tree Fever

Tree Fever (樹熱) was a disease that had affected the Shandian Tribe 400 years ago. They thought it was a curse from the Gods. Montblanc Noland managed to cure it in time. The black spot is the known symptom to anyone who has this disease. The cure for this disease is Conine, a substance from the Kona Tree.

In the anime, it looked more like a green rash, resembling moss.

First appearance: chapter 287; episode 187.

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