Jaehyun is a legendary assassin operating in the futuristic metropolis of Neo-Seoul. Raised in the harsh realities of the city's underworld, he honed his skills in combat, agility, and stealth from a young age. His past is shrouded in mystery, with only whispers of his origins known to a few. Jaehyun has a strict personal code, valuing honor and justice despite his lethal profession.