Endro~!

Yusha and her friends Seira, Mei, and Fai train to become adventurers in a land where heroes repeatedly confront the Demon Lord. Their small teacher Mao conceals an extraordinary secret: she is that enemy, sent into the past alongside the girls by a spell gone wrong.

Mao remembers the defeat awaiting her and hopes to stop Yusha from becoming a hero. Her pupils remember none of their future, concentrating instead on lessons, quests, and the difficulties of working as a party. The teacher’s scheme becomes less straightforward as their everyday lives draw them together.