Granbelm

Granbelm is a fantasy anime set in a world where magic, once abundant and integral to people's lives, was eventually sealed away nearly 1,000 years ago following its misuse in war. Seven powerful mages sacrificed themselves to achieve this, establishing the Magiaconatus seal. The seal now hosts the Granbelm tournament, a monthly competition to identify the strongest mage, known as the Princeps. Mangetsu Kohinata, a high school student, is unexpectedly transported to this alternate world, where she joins the Granbelm competition and teams up with Shingetsu Ernesta Fukami to fight against other mages.