@Kat E Not all but most of them do. Just a part of the plot but then became a trope. Most of the time it's on corruption
My favourite northern dukes are:-
1. Theordeo Lapileon
2. Rodnin Yales
3. Richard Rubellin
4. Pellus Termaine
5. Rudiegar Winterwald
6. And many more
https://mangabuddy.com/manga-list/235419
1. Theordeo Lapileon
2. Rodnin Yales
3. Richard Rubellin
4. Pellus Termaine
5. Rudiegar Winterwald
6. And many more
https://mangabuddy.com/manga-list/235419