I saw this once on tiktok and i cant find it but its basically a historical manhwa where i think the fl(?) is teaching the ml how to be a proper duke of the north or sumthin like that
Maybe this? https://www.mangago.me/read-manga/turning_a_crazy_dog_into_a_young_master/
I saw this once on tiktok and i cant find it but its basically a historical manhwa where i think the fl(?) is teaching the ml how to be a proper duke of the north or sumthin like that