The material that Elena and Tomoe needed to gather were not that rare. They were readily available in huge numbers not too far away from the city. Other than this particular material, there were other materials needed for this medicine which were way more rare. But the craftsman was rich and he had managed to gather everything else by spending a whole lot of money.
But the material he had requested for Elena and Tomoe to gather was extremely hard to get for vampires. That was because this grew on top of a mountain called Jousia mountain. This mountain was a little special for one reason.
Because of several unique factors gathering together in this mountain, any vampires approaching it would feel extremely terrible.
It was not like the lives of the vampires would be in danger but if any vampire approached this mountain, they would start to feel extremely uncomfortable.