she headlined. The action comedy is about a nerdy, reclusive cartoonist with a severe case of sociophobia who somehow gets mixed up in a drug deal involving one of the biggest organized crime groups in Korea, and is forced to deal with her phobia and interact with others as she runs from the police. Go returned to television in 2013 with The Queen's Classroom, a remake of the 2005 Japanese drama Jyoou no Kyoushitsu. The story depicts the struggle between a ferocious and ruthless elementary school teacher and her class. In 2016, Go starred in the family melodrama Dear My Friends, playing a freelance translator, a complex and sometimes abrasive character, who observes the lives of the old people surrounding her. In 2017, Go announced her return to the big screen with A Winter Guest Scarier than a Tiger, by acclaimed indie filmmaker Lee Kwang-kuk. In 2018, Go starred in the legal thriller drama Return. The drama revolves around a murder case that involves powerful members of an elite class, with Go playing the role of a rags-to-riches lawyer with secrets. However halfway through the series, it was announced that she dropped out due to irreconcilable differences with the PD. In early 2019, Go starred in the second season of My Lawyer, Mr. Jo, alongside Park Shin-yang. In 2021, more than two years after her last project, Go returned to the small-screen with Reflection of You, a JTBC melodrama based on a novel by Jung So-hyeon. Other activities In 2010, after her contract ended with De Chocolate E&TF, she set up her own talent agency with her brother, Go Byung-cheol, as CEO, called IOK Company. In 2012, her Spring Day co-star and close friend, Jo In-sung, also signed on. She published a book on skincare titled Go Hyun-jung's Texture in 2011. The actress has always been admired for her youthful appearance, largely attributed to her healthy skin which had made fans wonder about her beauty secrets. The book, arranged in the format of a documentary, contains Go's own philosophy on beauty classified under six themes—texture, color, light, line, formality, and scent—as well as her ideas on leading a sound and healthy lifestyle in general. The book is co-written by another writer who observed the actress's everyday life for six months, describing it in detail. The book became a bestseller, with all 30,000 copies of the first edition selling out in