Lee y/n - a popular and feared underworld assassin who works to end human trafficking and has her own organization. Kim Taehyung - disguised as a mafia but works to end human trafficking and has his own mafia empire. He haunts her cause he loves her. She can manipulate, her words manipulate anyone but not him. He doesn't leave even when she pleads him to. Will she accept him? A man who doesn't know anything about her but claims him as her lover