"You're home," Diluc acknowledged your presence a you had come home late from long night of drinking with your other brother, Kaeya. It was the least to say that your oldest brother was upset with his younger siblings shenanigans. Not only that, but he was unhappy with the fact that you'd Kaeya's betrayal rather quickly. To forgive Kaeya of his acts as a spy from Khaenri'ah and the events that lead to the death of their father was something Diluc thought he'd never be able to do.