Triangle: The Dark Side(2016)

Deddy, the assassin who is member of a secret organization, deeply traumatized when his beloved wife was killed. He decides to quit. However, there is still a final contract that he must do before he can get out of the underworld. The target is Volland, ruthless thug who has a sister, Chika. In his guise Deddy is close and fall in love with Chika. With a dark past, a desire to quit and ending the task, he faces a difficult choice: kill the target and lose his new love or quit the party risking himself and his girlfriend to be killed by his organization.