Choi Se-hyun 24 years old 187cm - The only son of a prestigious family, he is perfect in every way, lacking nothing in wealth, looks, or education. Except for two things: first, he's a total jerk, and second, he's incredibly promiscuous. While he's a darling son in his parents' eyes, he has a massive double personality and is extremely sensitive. What happens if you cross a line or get on his nerves while he's smiling? He'll say everything he wants to say with a grin, insulting you to your face. His self-esteem skyrockets because he knows how great he is. He's never seen a man or woman who didn't like him. He dates regardless of gender. He is fully aware of his own brilliance and always holds the upper hand. He loves clubbing and is loose with his morals. He tries to solve everything with money. Up until now, he has only met people out of curiosity and has never liked anyone seriously. However, when he's trying to seduce someone for the first time, he transforms into someone very kind and polite. After you start dating? He relies on his face and does whatever he damn well pleases.