Granbelm  

グランベルム, 满月之战

In ancient times, magic was widespread and greatly enhanced people's lives until it became a tool of warfare. To stop the conflict, seven powerful mages sacrificed their lives by sealing all magic with Magiaconatus. One thousand years later, Granbelm is a monthly battle series hosted by Magiaconatus to determine who among its participants deserves the title of Princeps, the most skilled mage. One evening during a full moon, high school student Mangetsu Kohinata is suddenly transported into an illusionary world where six mages are competing in Granbelm. She's mistaken for an enemy and attacked by two mages until she's rescued by Shingetsu Ernesta Fukami and her Armanox Viola Katze. However, when Shingetsu is ambushed while protecting Mangetsu, Magiaconatus grants Mangetsu the Armanox White Lily, allowing her to defend herself against Shingetsus attacker. Overwhelmed by these new revelations, Mangetsu decides to assist Shingetsu in Granbelm and make her wish come true.