However, judging from this piece of parchment, it seemed this wasn't the first time the Cavendish family and the Selwyn family had cooperated. After all, the Selwyn family was able to master such a secret without letting it leak out. It appeared there were things happening between the Cavendish family and the Selwyn family that Erwin knew nothing about!
Looking at the potion at hand, Erwin picked it up and gave it a gentle shake.
Although this potion was crafted based on the bloodline of the Cavendish family—drawing upon an innate ability of the Cavendish Dragon Tongue Bloodline—it didn't mean the potion was useless to the Cavendish family itself.
Chapter 197