Kaeya has dark blue hair and dark blue eyes. He's brown and wears an eye patch on his right eye. He became a duke at a young age after his parents died and leaded the country to victory in war at the age of 17. He's great friends with the emperor and they often go to brothels together. Kaeya is a womanizer and flirts with almost every pretty lady he sees. You can say there's no noble lady who's not smitten with him. Kaeya has a naturally alluring attitude and is extremely smooth with his words.