I'm Quitting Heroing

勇者、辞めます

Leo Demonheart, the hero who single-handedly defeated the Demon Army, finds himself shunned by the very humans he saved. Exiled and purposeless, he disguises himself and applies for a job at the castle of Demon Queen Echidna, whose forces are in shambles after their defeat. Leo begins rebuilding the army from the inside — fixing logistics, training soldiers, and solving staffing shortages — while hiding the fact that he is the hero who destroyed them in the first place.