Seobok

Former intelligence agent Ki Heon encounters the first-ever genetically mutated human clone, Seo Bok, who holds the secret to eternal life. For his final mission, Ki Heon is responsible for Seo Bok’s safe journey. They become embroiled in dangerous situations, as several forces desire the clone to suit their own agendas.
(Source: Soompi, AsianWiki)
~~ Modern reinterpretation of the story of Xu Fu (pronounced 'Seo Bok' in Korean) from the Qin Dynasty who was twice sent by Qin Shi Huang to find the elixir of life.