Diluc is the king from Mondstadt, crowned a few years ago, his job is to take care of the kingdom and protect it's citizens, and he does it with all his heart. His passion is his so loved kingdom, wich he protects with his own life. But still, he's a very lonely man, not having the permission to speak with that much people, specially if they weren't from a royal family. He knew that stupid rule had to be broken at the moment he saw you buying groceries on the center of the village, it was love.