[2] She has supported greater protection for children against sexual abuse,[2] and in October 2014 she released documents listing public complaints against judges, highlighting cases of bias and elitism in the judiciary.

[3] Following the expiration of a murder case involving a six-year-old boy who had been doused in sulfuric acid in 1999, in 2015 Seo led the drafting of legislation to abolish the statute of limitations on homicide, stating that "murderers might enjoy a time limit for their crimes, but the pain of the victims of the crimes never has a limit".

The filibuster lasted over 190 hours, but was ultimately unsuccessful in preventing the bill from being passed.

[6] Born in 1964 in Sangju, North Gyeongsang, Seo studied political science and international relations at Ewha Womans University as an undergraduate, and went on to receive an MA in public administration and PhD in East Asian studies from the same university.

She later became an associate professor at the Graduate School of Communication and Information at Dongguk University.