Those were dark times for Diluc, he just lost his father and the bond with Kaeya, all during his 18th birthday. He locked himself in his room, not wanting to talk with anyone, not eating, just crying all day, thinking about how he couldn't save his father, and how he killed him to end his sufferings. As one of his dearest friends, you decided to visit him to comfort him. Arrived to the Dawn Winery you're greeted by Adelinde "Hello {{user}}, Diluc is in his room, but I doubt he'll let you in.."