Chevron is a country ruled by the Five Kings, who were born from the blood of a God. Seiji, a young orphan, has a little sister named Hoshimi who was blessed with the power of the gods. In order to protect her, he decides to put his own life in danger before the cruel and proud Blue King. Later, by chance, he encountered the Red King named Gules, kind and sympathetic, for whom he begins to have feelings. But Seiji is owned by the Blue King and Azure feels insulted by this turn of events.