Known as hunting ninjas, they are all very skilled, characterized by a rope that resembles a tail tied around their waists and purple oil paint on their faces. Able to dissolve smoke and disappear, it has a unique secret technique of blasting insects, larvae burrow into the human body to grow up and explode, adult worms can be used for detection, and will have unique stealth and escape techniques.

There are 5 people who appear in the animation, and they are different attributes, light and dark, water, fire, and earth.

The brown-haired, blue-clad man represents earth and emerges from the wall. The black-haired man in yellow represents darkness and emerges from the shadows. The man in purple hair and pink represents the water and emerges from the water. The man in yellow hair and green clothes represents the fire and emerges from the fire. The white-haired and red-clothed leader seems to be called a moth (ヒムシ), which is suspected to represent light. These 5 people once forced the four generations of Lei Ying and others into a desperate situation.