Healberry is a fruit that can any curse and illness in the world. It doesn't matter what type of curse is, it doesn't matter even if the demon was the cause of the Curse it can heal anything.
However not anyone in the world knew about this fruit because this would be the first time Healberry be found on the western side of the continent where demon borders are.
The place this Healberry grows named is Death Forest, that place is full of curses and monsters of [A] rank and [S-] rank. That's the main reason why that area isn't properly searched by 'The World Government' either.
The death rate is high whenever the world government sends a search team. After so many years of sending the search team, they were only able to know about 20% of the entire forest.
At some time World Government gave up exploring the forest and named it 'Death Forest.'
