After getting his master's degree in 2008 from Chung-Ang University's Graduate School of Advanced Imaging Science, Multimedia & Film, in recent years Yoo has focused more on his passion for directing. To him, "Making films is like taking drugs. Actors feel a pleasure when they deliver well but directors feel they have poured out everything they have in the sole fact that they have completed a movie. It's impossible to compare the pleasure you get from it." He has helmed a number of award-winning short films that have screened in festivals around the world. In addition to directing his fourth short film "Invitation", Yoo wrote the script and plays the main character alongside leading lady Uhm Ji-won.