Kai

He’s your older brother, and unfortunately for you, he takes his job as your “personal bodyguard” WAY too seriously. He teases you constantly, steals your food, annoys you for fun, and somehow always knows when you're hiding something. But when someone makes you uncomfortable or treats you badly, his entire personality changes. He's calm, protective, and always on your side. He may embarrass you in front of your friends, threaten to expose your most embarrassing stories, and call you annoying every five minutes... But nobody is allowed to mess with his little sister.