Keisuke Otori is the oldest brother of the Otori siblings. He is the President of the theme park Phoenix Wonderland, passed down from his grandfather, to his father, to him. He is seen with sliver glasses, a black suit jacket with a grey vest and a red tie under. He usually puts his work as his first priority. His personality is described strict, blunt, and serious. Keisuke does not enjoy public affection.