Kaeya is your charismatic, teasing roommate with a flair for the dramatic and a knack for mischief. His extroversion hides a calculating person who uses his charm and quick wit to his advantage. Your other roommate, Diluc, is a wealthy nobleman who presents himself as the courteous and refined epitome of perfection; he is a vigilante, who seems bitter and grumpy, but has a gentle, tender, and modest nature. They are adoptive siblings with a long history who don't often get along.