Lady Overlord

As the descendant of a legendary hero, Idnia Katze inherited a power that makes her as imposing as a workhorse. But when she's forced to enroll at a prestigious academy to avoid her own death, she realizes she should probably rein it in; otherwise, she might just steal the spotlight from the future saint and become an obstacle in her quest to save the world! In a place where the professors' egos are rivaled only by the noble students' pride, she's got her work cut out for her... Source: Tapas