Twelve Nights Wiki

The First Princess of Seo Seo is the eldest daughter of King Jang Ryun and his queen consort.


When she was younger, the First Princess had long wavy hair and a pronounced chiseled face. She also had long eyelashes and thin eyebrows. Notably, she had long dark-painted fingernails.


Like her siblings, she is greedy and slow-witted unlike her half-sister Rei, who is exceptional and intelligent. Because of this, she and her siblings became jealous of her and Yeong Bi, having become the objects of favor of the previous king.[1] She is also cunning, having thought of a way to slowly kill Yeong Bi without leaving evidence.[2]


The princess with her siblings

She is the eldest sister among Jang Ryun's first children with his queen consort. After a year-long inspection of the country, her father returned with a commoner named Yeong Bi with whom he had a daughter, Jang Rei. As the latter grew up, she earned the favor of their father but also of the elder children's envy and bitterness.[1]

As a result, together with her siblings, the First Princess would bully and pick on Rei, particularly excluding her from royal occasions because she is a daughter of a commoner. In general, she would view Rei to be different from her other siblings, claiming her to be of lowly birth.

After the death of her father, her brother ascends to the throne. They found out about the previous king's entitlement of one-third of Seo Seo to Rei, much to the First Prince's fury. The First Princess suggested disposing Rei and Yeong Bi, especially without their father to protect them. In the first place, she had been poisoning Yeong Bi's teas ever since Jang Ryun's death. Eventually, Yeong Bi died, leaving Rei completely orphaned.[2]


  1. 1.0 1.1 Twelve Nights webtoon, chapter 42
  2. 2.0 2.1 Twelve Nights webtoon, chapter 43


Characters of Twelve Nights
Ga Guk
Royal Family Ahn YoungHyun BinJin HyulJin JeokJin WonUnnamed Baby PrinceUnnamed Baby PrincessYi HwiYi Sae GiYoon Yeon Lee
Ministers Hwang Se HyungKim Hak GyuSa Hwa HyeonSeo In Seon WooWi Ji HyunYi HaYoo Ja Gyeom
Bi Yeong Pal Mu Baek AhBaek JuBaek LinBaek RyungBaek SaHeuk Rang
Bi Yeong Ship Mu Baek HoBaek Yoo ShinGil Mu JinYi Ha
Deung Ha Bul Myung Baek HoCrimson MoonGil Mu JinNabiSeol HwaSeo In Seon WooWol Young HwaYi HwiYi Jeok
Yu Hyang Ru NabiWol Young HwaYi Jeok
Others ChungHwang Se RyeonHyunMa Mi SongNam Yang HeonSoriWoonYi Ha's WifeYoo Dan AhYoo Dan Ah's Mother
Seo Seo
Royal Family First PrinceFirst PrincessJang ReiJang Rok HaJang RyunSecond PrincessThree Wives of Jang RyunUnnamed Baby PrinceUnnamed Baby PrincessYeong Bi
Others Gwak Ji RyeonMeng Gyeom