Yoona posted a photo on Instagram of her and her star-studded fellow cast members plus director of the movie, Cooperation. Yoo Hae Jin in a fedora is as cool as Hyun Bin in a leather jacket. Haha. She’s one fortunate gal to be hanging out with these talented men, Kim Joo Hyuk included, and it doesn’t hurt that the movie will most probably do fine at the box office. I believe the cast were/are in Busan to promote their work.