episode story arc beginning with "The Ancestors Name is  Kagome" features four youkai ninja: Suzaku the bird, Seiryuu the  dragon, Byakko the tiger, and Genbu the tortoise. These four are  mythological creatures in Chinese constellations, each representing  a direction and a season of the year, and they appear in many  historical Chinese myths and legends, as well as many other works of  modern Japanese fiction 