Mansen Maou Shoujo Ena-sama

The 666th Demon King of Glengard, Fienalia Glengard Flamveil, finds herself uninterested in ruling, as humanity has already been conquered and there are no remaining challenges. Seeking new excitement, she sets her sights on Earth as the next target for conquest. After encountering Kento Sugitani, a young man who dreams of becoming a manga artist, she discovers a potential new interest that piques her curiosity more than domination. As a result, she decides to take an unexpected path by enrolling in a manga school to explore this new hobby.