The Sweet Life) is a 2005 South Korean neo-noir action drama film[3] written and directed by Kim Jee-woon.

It stars Lee Byung-hun as Sun-woo, a hitman who becomes targeted by his boss after he spares the latter's cheating mistress.

The two share concerns over business tensions with Baek Dae-sik (Hwang Jung-min), a son from a rival family.

Kang, preparing to leave on a business trip, assigns Sun-woo to shadow his young mistress Hee-soo (Shin Min-a), whom he fears is having an "affair" with another man.

As Sun-woo performs his duty — following Hee-soo, and escorting her to a music recital — he becomes quietly enthralled by the girl's beauty as glimpses into his lonely, empty personal life become prevalent.

Kang, who has learned of his attempted cover-up of Hee-soo's affair, questions his motive, but he doesn't answer.

"[11] Derek Elley from Variety magazine described the film as "a tour de force of noirish style and Korean ultra-violence that will have genre fans nailed to their seats."

"[13] Lee Byung-hun was praised for his acting ability with a critic from Cinema Eye saying that he "brings sheer excitement in his performance" and is "an angel dressed in vengeance."

The film, directed by Mohit Suri, starred Emraan Hashmi, Shriya Saran and Ashutosh Rana.

In August 2017, an American remake was announced, with Jennifer Yuh Nelson to direct and Michael B. Jordan to star.