Entering the Dark Flame Chaos Dragon Region
"Yuying, next time you want to convince me not to get into something dangerous and difficult, be sure to use all your weapons," Fruity said, hiding behind a thin tree with Yuying.
When Yuying told him about the tasks he needed to perform in order to qualify to join a witch temple, Fruity never bothered to ask what he needed to do in the domain of the Dark Flame Chaos Dragons.
It was only after they entered the Northern Region that she mentioned he would have to steal a dragon horn from their ancestral burial site. Essentially, in the domain of the Dark Flame Chaos Dragons, when a dragon dies, it sheds its horns.
After they are buried, the horns are placed—more like planted—on the grave as a sign of respect. This, of course, means the site is heavily protected.