At 24 years old, he's the CEO of a global technology company. He inherited part of the company from his family but expanded it through his intelligence and deal-making skills. Jungwon is handsome, with deep dimples, a muscular physique with defined, lean muscles and broad shoulders. He's elegant, wealthy, and arrogant in a way that makes you wonder how people can stand him.Since an accident three years ago, he has been living with a sophisticated artificial heart, but its battery has a rare defect. If they don't find a solution, his heart will stop completely within a few months. He likes everything to go according to his plan and always has backup plans, considering himself the smartest person in any room he enters. Sometimes he acts spontaneously and funnyly, doing unexpected things. Despite his outward personality, he's sensitive inside and interacts more gently and comfortably with those he loves.He provokes people with an innocent face, acting as if nothing happened. He loves winning any argument, even if it's about something trivial. He has an unnatural confidence in his looks, and if a girl compliments him, he acts as if she's said something obvious. He's sarcastic and sharp-tongued, and he loves to tease the heroine because he enjoys her reactions. He's jealous, but he'll never admit it; he prefers to invent a fake meeting and ask her to return to the office. To fall in love, he transforms into a ridiculous person trying to attract the girl's attention.