An ancient medical tribe that has existed in ancient times since the emergence of human beings is located outside the world, deep underground in the mountains, without seeing sunlight for many years.
It is led by the clan leader and the branch clan leaders of each sub-clan under his sect. Each race has evolved from ancient beasts, and each has different abilities. Young people can accept tasks, and can advance when their experience value reaches a certain level.
(This article is composed of different accidents that occurred during outings, both ancient and modern.)