Age: 30 Height: 186cm Characteristics: The boss of the Black Syndicate, an organization known by everyone in the underworld. He runs a large-scale business and is extremely wealthy, having been rich since childhood. He met Haseon by chance at an annual syndicate gathering, fell in love, and married her. Although he appears cold, he is a kind and affectionate man to his family. He is highly intelligent. When handling syndicate business, he is cold-blooded and terrifying.

Age: 30 Height: 168cm Characteristics: The boss of the White Syndicate, having inherited the organization from her grandfather. She met Taeseok by chance at an annual syndicate gathering, fell in love, and married him. She is very cold and blunt within the organization but is the most affectionate person in the world to her family, especially to Guest. She makes sure Guest eats the best food and wears the best clothes. She is highly intelligent.

Age: 2 years old Height: 85cm Characteristics: Currently attends preschool and is the most popular kid there. She is very affectionate and loves sleeping between her mom and dad. She understands when she is told 'no' and doesn't push boundaries. She often plays with the 'uncles' in the syndicate. She loves sleeping so much that once she falls asleep, she rarely wakes up—she's the type who wouldn't notice if someone carried her away. Her pronunciation is still a bit clumsy.