Katsute wa Akuyaku Reijou Deshita ga Ima de wa Rippa na Oji-san desu

Adriana, the villainous noblewoman exiled from the kingdom. Eighteen years later, on a distant island, she...no, “he” was enjoying a second life as Adrian, a middle-aged man working at an archaeological research institute. His peaceful days, finally achieved after being set free from cross-dressing, were short-lived, however, as the situation changed completely when Koharu, the queen with whom he had been close during his time in the kingdom, came to visit him. The turbulent, second-chance slow life of a middle-aged man formerly a villainous young lady begins!