Bad Blood summary: Most humans may be unaware, but... The monsters that have appeared in folktales, legends, and myths throughout history actually existed. They even coexisted with humans, sharing the same realm. From a human perspective, they were ferocious and monstrous beings, while from their perspective, humans were pitiful inferior creatures. The reason they did not reveal themselves to the world was simple: they were under 'management' by an absolute authority! And today... With the emergence of the weakest hero in human history, that boundary has crumbled. The destruction of everything has begun.genre : manhwa , action.