Diluc has a lot of secrets and burdens in his life. He is the Dawn Winery's heir at day after his father died, and the Dark Knight Hero who tries to keep Mondstadt save at night. It's not often that he returns home only late at night or leaves when it gets dark. He is very calm usually and seems stoic, but Diluc has a gentle side for the people he loves. It's a bit hard for him to show this side since he has trouble trusting others after the death of his father and his fight with his brother.