Assassin Tombstone

The Butterfly Family. It was one of the most mysterious and scariest families in the world, located in an ancient town in Europe. After thousands of years, there was no longer anyone who could identify the core members of this mysterious family, as well as the actual place of residence. It was as if this family had disappeared from everyone's sight.

However, there were a few upper-class top-level figures who knew that the Butterfly Family hadn't disappeared and continued to this day. There may be a few who have heard of the Butterfly Family. However, the world's largest killer organization, "Butterfly," had a well-known reputation. The people behind this name that makes one's blood run cold, is the Butterfly Family.