[Machine Translation] The Phrygian Royal Academy of Jewelry is an academy for the study of mysterious gems called "Gems". The main character, Soma Jace, attempts to infiltrate "Class Diamond" as an agent to search for the "Philosopher's Stone" that lies dormant in the academy. However... he is assigned to the mysterious new class "Class Pegasus". Soma is a foreign spy who hides his true identity. Belka, a girl who is only interested in swords. Veo, a solitary delinquent who doesn't hang out with anyone. Mea, a beast and a rare talent. Marks, the prince with the worst grades and attitude. Arianna, the only sane conscience of the class. The Pegasus group is made up of six boys and girls of different purposes and nationalities. They often rebel against each other, but soon they are faced with a crisis that threatens the world. The "Ishinokui" - a mysterious disaster that threatens to petrify the entire Nova continent. Located on the front line, they become embroiled in a struggle with the evil organization "Medusa"...? Let's go, everyone... let's give it our all, to the best of our ability! Will Soma be able to accomplish his mission? Will Soma be able to accomplish his mission, and will he be able to overcome the threat of petrification that threatens to consume the continent? An adventure tale of wills and bonds that fly across the world - here it shines. ( CERO Age rating: To be determined )