Africa, Ethiopia, Abyssinia plateau.

a place near the lake, similar to a military camp, where more than 100 teenagers are constantly training. This inconspicuous place is the elite training school of Zeus, the European killer organization. People who can enter the school have reached the level of "blood diamond". There is a big flag on the playground of the school. The pattern on it is the Abyssinian cat, the "sacred thing" of ancient Egypt. Behind everyone in the training camp is a black mamba snake. Zeus killer organization has four levels of killers, from high to low: Black Diamond killer - Blood Diamond killer - Blue Diamond killer - Pink...