Azure Sky Divine Crystal

The archeologist Cielo once advanced the theory that the deep ocean floors were once above the ground. The experts were all dismayed and they tried to expell her from the academy. But when this stone, blue as the sky, was discovered on the dark, colorless floor of the ocean, they could do naught by believe. A young sorceress of a certain group of knights was interested in Cielo's records, and began gathering documents in secret to gain possession of one of these divine crystals bearing the name of the sky.