Mao

Disguised as a youthful new instructor at the adventurer academy, this deceptively adorable teacher oversees the same class as Yuusha and her companions. While her small stature leads students to treat her like a charming mascot, she possesses a level of mental maturity far beyond her outward appearance. Beneath this innocent facade lies a much more menacing reality, as she is actually the powerful and dreaded Demon Lord hiding in plain sight.