Sung Jae-gi, born on September 11, 1967, was a prominent South Korean human rights defender, entrepreneur, and autobiographer. He was known for his controversial role as a men's rights activist, leading various organizations that advocated for masculinist and anti-feminist causes. Among these were the Association of Anti-Feminism and Male Liberation, the Association for the Abolition of the Ministry of Women, and Man of Korea.
In addition to his activism, Sung dedicated his efforts to running a shelter that provided support for homeless men, male victims of violent crime, teenage runaways, and members of the gay and transgender communities. His commitment to these marginalized groups highlighted his complex approach to human rights, focusing on issues often overlooked in mainstream discussions.
Despite his contributions, Sung faced significant personal challenges. Near the end of his life, he was reportedly burdened with debts amounting to one hundred million won. On July 25, 2013, he expressed his despair on the Man of Korea website, revealing his intention to end his life. Tragically, the following day, he jumped from the Mapo Bridge in Seoul, and his body was discovered four days later.