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In the stills, one gets the sense of a chaotic storyline filled with romance, action, and suspense. While Kim Yoo Jung and Park Sun Ho stare at each other meaningfully and Jihyun gets dangerously close with Baek Sung Hyun, Kim Woo Bin startles with his determined stare and raised gun. The cast lineup will also include actors Jang Hyuk, Oh Kwang Rok, Lim Hyung Joon, Park Hee Bon, Ryu Seung Soo, and Hyun Jin Young. 

The drama will be based on the popular webtoon series of the same name. The webtoon was published between July 2010 and March 2012 via Naver; it followed the story of a cat who offered private lessons on romance to an unemployed Ma Dae Choong in order to win the heart of a top star, Seo Rin. While Kim Yoo Jung will be playing a human version of the cat, Park Sun Ho and Jihyun will be playing the love interests. Kim Woo Bin and Jang Hyuk, on the other hand, will be playing completely new characters not in the original comic.