Cross Ange: Rondo of Angel and Dragon

The story of the Ange Vierge trading card game follows what happens when "Hairou" portals suddenly open, fusing three different worlds together. As a result, various mysterious "Exceed" powers are awakened in teenaged girls. An academy for these so-called "Progress" girls is built on the isolated Seiran Island in the Pacific.

A normal high school boy Kisaragi Ryuji's peaceful life is turned into an adventure by the return of his second cousin Eriko. Ryuji and Eriko seize a relic box from a black broker. In the box, they find a red dragon girl Rose. In order to protect Rose from the black organization, Ryuji decides to fight using his power as a relic handler.

Ange is now trapped in the Seijuu Universe, and cannot leave until she awakens Seijuu's Queen. In order to do this, she must gather nine new guardians. It sounds like a fairly simple task, but how can she convince these men to tear away from their own lives and protect the life of another?

A young girl named Ange is summoned to a Sacred Land and is chosen as the Legendary Etoile, whose mission is to save the newly-born Cosmos of the Holy Beast, which has recently fallen under a crisis. With the support of nine Guardians (who have the power of nine elements), she embarks on a journey to save the dying land of the Holy Beast and to discover her true self.