Spoiler!
The reason why the duke hate temple because in temple there is a kana biological father who is very high position in temple and because of this person black fog is appearing and duke known he time traveled countless times and soon the discrimination of black hair will also disappear because people's will find out that there is a also a country where people with black eyes and black hair are common and people will start to think that this is also common and they start nagosiation with that country guys this world is very primitive they don't even known there world all continents and countries😮💨😮💨😮💨
