During his guest appearance on the January 7 broadcast of MBC FM4U's 2'O Clock Date, Kim Woo Bin talked about his younger sister.

When asked about how he feels now that his sister is growing up, he said, "She is growing well and becoming self-reliant. She can really take care of herself, but just like every older brother, I tell her, 'All men are animals'."

Park Kyung Lim asked him, "What kind of man do you want your sister to date? Would you prefer someone who is like Kim Tan or Young Do? You may also choose Myung Soo or Chan Young."

Kim Woo Bin answered, "I choose Min Hyuk's character. I want her to date someone like Chan Young. He is lovable, charming and you can learn a lot from him. I also want her to marry someone like that."

On Chan Young's actor Min Hyuk, he said, "Min Hyuk is a very polite person. He's kind, but he still uses formal speech with me."