Yi Sun-sin
He continued acting in television, appearing in "Magic Warriors Mir &amp; Gaon" (2005), an adventure series for children. Yoo further built his filmography, playing younger counterparts of male protagonists in television dramas, including general Yi Sun-sin in "Immortal Admiral Yi Sun-sin" (2004), King Seongjong in "The King and I" (2007), and Gwanggaeto the Great in "The Legend" (2007).