| Kim Hak Gyu|
|Title||Secretary of Treasury|
Kim Hak Gyu is the Secretary of Treasury of Ga Guk.
During one of the court meetings in the palace, Kim Hak Gyu suggests to the absent-minded Emperor Jin Won to expand their budget allotted to the military so that in order to prevent even more damage in their latest battle, it is essential that the army be reinforced, which has displaced hundreds of refugees, supplying aid to victims. However, he is stopped by Yoo Ja Gyeom as Emperor Jin Won asks them if they know "Nabi." It can be implied that he resents the existence of the slums in Ga Guk.
At the Prime Minister's residence, the Minister attends a party alongside Wi Ji Hyun, the Secretary of Defense, as Nabi inspects him from afar, thinking that his name was not in the compact.
|Characters of Twelve Nights|
|Imperial Family||Ahn Young • Hyun Bin • Jin Hyul • Jin Won • Jin Yeon • Yi Sae Gi • Yoon Yeon Lee|
|Ministers||Hwang Se Hyung • Kim Hak Gyu • Sa Hwa Hyeon • Seon Woo Seo In • Wi Ji Hyun • Yoo Ja Gyeom|
|Bi Yeong Pal Mu||Baek Ah • Baek Ju • Baek Lin • Baek Ryung • Baek Sa • Baek Yoo Shin|
|Bi Yeong Ship Mu||Mu Jin|
|Deung Ha Bul Myung||Baek Ho • Crimson Moon • Mu Jin • Nabi • Seol Hwa • Seon Woo Seo In • Wol Young Hwa • Yi Jeok|
|Yu Hyang Ru||Nabi • Wol Young Hwa • Yi Jeok|
|Others||Chung • Hwang Se Ryeon • Hyun • Ma Mi Song • Nam Yang Heon • Sori • Woon • Yi Ha • Yoo Dan Ah • Yoo Dan Ah's Mother|
|Imperial Family||First Prince • First Princess • Jang Rei • Jang Rok Ha • Jang Ryun • Second Princess • Three Wives of Jang Ryun • Yeong Bi|
|Others||Gwak Ji Ryeon • Meng Gyeom|
|Others||Yoon Yeon Lee|