Shigure stood guard in the dungeon every day, but no one had seen the last big boss (Shigure) for a long time, so he was bored and played with players in the dungeon every day until the system gave the S-level dungeon boss a 10-day long vacation. Together with other S-level dungeon bosses, he came to the long-lost human world and spent a wonderful vacation. The four bosses applied elements to their own copies based on the horror novels written by humans themselves. Later, each of the four found a boss heir. After retirement, they would return to the dungeon from time to time to watch players suffer. They would come back to play in strange identities such as players, NPCs, and mini-bosses. Occasionally, they would scare friends and heirs together.