Seo studied at Youngwon Middle School and Youngshin High School during her early education before leaving for Spain to major in Journalism, with the intention of being a TV news presenter. However, she later became an Actress instead after being persuaded by the CEO of her then-management company, Made in Chan Entertainment. Seo first appeared in an advertisement for SK Telecom and debuted as an Actress in the sitcom Potato Star 2013QR3, both in 2013.
