Her Private Bodyguard

Her Private Bodyguard summary:

Once the ace of the mysterious gang "Dragon Spirit", he was named the "God of Death" who terrorized even the darkest forces. Now he is retired and trying to lead an ordinary life, only to find himself entangled with an array of beauties: a goddess-like wife, a violent policewoman, an innocent secretary, a cool mafia...to make the matters worse, every woman comes with trouble in abundance...