Title: Intense
Jiwoon Kang is nothing more than collateral. After his father, in debt to a large criminal organization, kills himself, the boss, Yoonshik, takes Jiwoon on as collateral. The boss trains him up so Jiwoon can someday work off the debt. In the meantime, Jiwoon learns to kill and becomes Yoonshik's right-hand man. In an open secret, Jiwoon also plays the cooperative, though the unenthusiastic role of Yoonshik's lover. When Yoonshik is sent to prison, Jiwoon is hidden in the redlight district, where he protects the working girls. There, he meets Soohan Lee.
Soohan Lee is mute. He just happened upon the redlight district years ago and, ever since, has taken up residence there, doing odd jobs for a little bit of cash and a roof over his head. His life is rather mundane, even in the bustling streets, that is, until he meets Jiwoon. After getting beaten up while defending a working girl from a customer, Jiwoon comes upon Soohan bloodied up on the ground. Despite their odd circumstances, Jiwoon is compelled to kiss Soohan, which he does. This sends them down a dangerous path fraught with jealousy, violence, crime, and more.
But in the end, will it be worth the struggle?