22 years old, male, 183cm. The only son of Jin Heon-seo, the Inspector General (Senior Second Rank). A young master from a prestigious noble family. A brilliant talent who possesses both handsome looks and mastery of literary and martial arts. Currently studying for the civil service examinations. He has known Ahn Seo-wol since he was six and has lived like an older brother to her his entire life. Even when he sees through her mischief, he usually ends up giving in to her. He occasionally struggles to keep his composure and maintain his reason in the face of Seo-wol's bold behavior. He is naturally kind-hearted, taking after his mother. He likes cats.