His endearing interpretation of Wan, a successful radio host in his 20s who harbors a lifelong crush on Shin Joo Yeon (Kim So Yeon), a 33-year-old career woman served as a catalyst for his subsequent casting in "Discovery of Love."

In "Madam Antoine," he abandons the enthusiasm of his "I Need Romance 3" character while embracing the disturbingly cool persona of Nam Ha Jin from "Discovery of Love."

Sung is the leading man of the series, but his position as the younger "flower boy" who will undoubtedly conquer the skeptical heart of Han Ye Jin, is challenged by 2AM's Jinwoon (Marriage Not Dating) and Lee Joo Hyung (Tomorrow's Cantabile).

"Madam Antoine" airs on jTBC on Fridays and Saturdays in the 8:30 p.m. KST time slot.

What are your thoughts on the potential of Sung Joon as a rising lady man in "noona romance?" Comment below.