A Virtuous Business was an enjoyable watch. You can make a story involving some risqué themes and make it pretty straightforward and mature without being graphic. What kept my interest in the story was the background and development of the four women. Kim Yeon is such a part away from her role in The Penthouse. That shows her great range as an actress. She did so well separating those two characters; I was like, Wow, she may just be portraying herself in this role. 

The premise of the risqué sales was mainly the foundation in which the friendships and developing back-and-side stories were formed. I rooted for their success in their personal lives as well as business. 
Overall, A Virtuous Business was a good watch.