The Sapphire Dragon did not reside in the Castle of the Sapphire Duke — Azure Sky Peak Palace.
Instead, it nested in the cliffs beneath the Azure Sky Peak Palace, a place known as the Blue Dragon Garden. The Blue Dragon Garden was tremendously vast, possibly even larger than Coral Island. Court servants entered the Blue Dragon Garden daily to collect gems produced by the Sapphire Dragon and to search for ore that had transformed into crystal.
Sometimes the Duke would train the Blueblood Knight Order in the Blue Dragon Garden or hunt there — the garden was home to a massive number of wild beasts and magical beasts, which served as sustenance for the Sapphire Dragon.
When the incident of dragon slaying occurred, the Duke was hunting with the Marquis of Bull.
Then, the dragon slaying event erupted.
