Kwon Jin-Soo (Hangul: 권진수, Hanja: 權眞秀), more commonly known as Jin, was married to Sun-Hwa Kwon and was one of the middle section survivors of Oceanic Flight 815. Knowing no English, Jin initially isolated himself and Sun from the other survivors, and when he found she’d secretly learned the language, he felt betrayed and briefly left her. He later learned English himself and involved himself more in group activities. His time on the island restored his marriage, which his violent, corrupt job had nearly ruined. He even managed to conceive a child with his wife, even though he’d been infertile. He also contributed through his combat skills, which he’d learned as his father-in-law’s enforcer, and through fishing, a humble occupation that had brought him shame back in Korea.
Jin tried a number of times to escape the island. His first attempt sent him right back to the island, into the hands of a hostile group of other survivors. He and Sun later boarded a freighter, but though Sun escaped, a disaster aboard convinced her he died. Jin returned to the Island, time traveling to 1974, where he joined the DHARMA Initiative as a security officer for three years. He returned to 2007, where he reunited with Sun. They tried to leave the island on a submarine. It sank, and the two drowned together. They stayed a couple in the afterlife and moved on with their friends.