In the land of Shorai, their origin ancestor is the Kirin, and where Byakko (white tiger), Seiryu(green dragon), Suzaku(, and Genbu rules the 4 cardinal directions (north,south,east,west) [Those who rule α] [Those who serve β] [Those who belong to Ω]
Born in this land = status is an absolute principle.

Since childhood, Ayasai has been forced to become Byakko, one of the Four Gods, the noblest among the Alphas, and despises this world's class system. However, one day, he helped Mamiya, a mixed-race β, when he was being bullied, and he started to take Mamiya by his side.
Ayasai begins to worry about the fact that he took advantage of his status, which he hated, and forced him to become his close aide, but...?