Bastard's Dead Man

Shin Lee is the wealthy CEO of a company who should be able to get any woman he wants, but he has a problem: he can’t maintain an erection. Hyonggi is a charming deliveryman who will answer any call within a few minutes. The two cross paths when Hyonggi unexpectedly rescues Shin’s daughter from a dangerous situation, and Shin soon discovers that Hyonggi himself might just be the mystical solution to his penile dilemma!(Source: Lezhin, translated) Note: Chapter count includes a prologue.