Until The Last Breath

One of them came to kill.
The other had long given up on running.
On the quiet, mist-shrouded shores of Jeju, the fates of two people intertwine - people who should never have met. Chi-geon is a hitman who has spent his entire life carrying out orders, yet now, for the first time, he is unable to pull the trigger. Jae-yeon is a terminally ill woman who no longer fears death and no longer hopes for anything from life.
A single refused order is enough to turn them both into targets. As the mafia tightens the noose around them, they must flee from those who never leave a job unfinished. From a forced alliance, trust slowly grows - and from that trust is born a bond that makes any loss more dangerous than anything else.
Soon both of them realize that the hardest fight is not for survival, but for finding a reason to live again despite their past, their fears, and the approaching end. Because sometimes the most dangerous decision is not to kill someone...
but to let them live.
"Two people who have nothing left to lose... except each other."